Revision as of 17:25, 7 March 2010 (view source) Ted (Talk | contribs) (→‎Ice Box) ← Older edit		Revision as of 15:07, 8 May 2010 (view source) Ted (Talk | contribs) (→‎Sails: added size of blue genoa (lp = 19'10")) Newer edit →
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	** tiny jib (48%) (pavilion)		** tiny jib (48%) (pavilion)
	** small jib (boat)		** small jib (boat)
−	** blue-trimmed genoa (boat)	+	** blue-trimmed 124% genoa (boat)
−	** monster genoa (boat)	+	** all-white 150%(?) genoa (boat)
	** spinnaker (asymmetric) (boat)		** spinnaker (asymmetric) (boat)
	<br>		<br>

---

Revision as of 15:07, 8 May 2010

This is an exhaustive list of Nevermore's various subsystems.

Rigging

Standing Rigging

Rig Dimensions:

• I: 47.00' (Height of the foretriangle, measured from the highest point of the sail attachment to the sheer line at the point abeam the mast. The point of sheer line is the intersection of the hull and deck)
• J: 16.00' (Horizontal distance from forestay attachment point to front surface of mast)
• P: 41.50' (Maximum hoist of mainsail, measured from lower edge of the upper mast band to the upper edge of the lower mast or upper surface of fixed boom)
• E: 12.00' (Maximum foot length of the mainsail, measured from the after edge of the mast to the inner edge of the band on the boom; Nevermore doesn't have a band, so we say to measure from mast to mainsail clew.
• Est. Forestay Len.: 49.65'

reference: sailboatdata.com

Sails

• Catalog of ALL sails (as of Oct09, by MattW)
  [some of these sails are listed separately later below]
  • mainsail 1 (on the boat)
  • mainsail 2 (at the pavilion)
  • trysail (pavilion)
  • tiny jib (48%) (pavilion)
  • small jib (boat)
  • blue-trimmed 124% genoa (boat)
  • all-white 150%(?) genoa (boat)
  • spinnaker (asymmetric) (boat)

• MAINSAIL
  • dedicated main halyard winch on starboard on mast
  • jiffy (slab) reefing hooks on gooseneck, and dedicated reefing line winch on boom
  • 2 jiffy reefing cringles in leech; jiffy lines share the winch on boom
  • Dutchman flaking system (Type A); best guess model number A40 (see rationale below)
    [see Owner's Manual WEB or Systems Man reference]
    • type A implies halyard style topping lift
      (Type B has fixed attachment of topping lift at top of mast, with adjustment at end of boom)
    • most likely Series we see in catalog is A40 3-line version for 34-40 foot boats
      but we see NO type or series indications on the unit
    • dedicated topping lift cleat on port side of mast (but no winch)
  • traveller
  • boomvang / preventer
    • as vang, block attaches to fitting at base of mast
    • as preventer, block attaches to spinnaker toerail snatchblock attachment (moderate air)
    • or preventer, consider using a dedicated heavy line from end of boom to bow cleat (heavy air)
      NOTE: this heavy-air scheme hasn't been checked out by our most knowledgeable skippers

• FORESAIL
  • Large genoa: ~ 160%, all-white
  • Smaller genoa: ~ 130%, blue UV protection along the leech
  • Jib: 100% ?
  • Foresail furler:
    • Assembly & Ops manual File:Furlex 200S Furler.pdf, also see [Docs-aboard List]
    • Operation:
      • keep a little tension on furling line as sail is deployed, to minimize line overwraps in furler drum
      • keep a little tension on jibsheets while furling, to make a tight roll of sail on the forestay
        • tension on furling line is considerable for first few turns of drum;
          however, NEVER apply too much tension if furler is "sticky"
  • jib halyard winch: dedicated, port side of mast;
    • Operation:
      • The Owner's Instructions page 6 directs that there be at least 2 turns of WIRE halyard, preferably 4, around the winch with foresails fully hoisted; and never should genoa halyard tension be taken on the rope halyard tail
      • it follows from the above that we should not consider the deep grooving of the winch drum as being anomalous
      • it also follows that the wire-to-rope splice will be wrapped on the drum
        (which ThomS was taught is NOT desired on most boats for integrity of the splice)

• SPINNAKER
  • asymmetric (with keen Raven!)
  • question: what size (PHRF-NE handicapper wants widest girth if we want to compete in racing class)
  • pole (telescoping aluminum) (which MAY not be usable as whisker pole for our jibs or asymmetric spinnaker))
    • fitting for topping lift, but not for downhaul
    • two mast rings. each off centerline of mast maybe 30-deg to port and to stbd
    • question: do they adjust vertically? don't think so (ThomS Dec09)

Deck Hardware

Winches

Winch #	Location	Lewmar Part #	Features	Purpose
1	cockpit port	48 ST	2-speed self-tailing	foresail sheet
2	cockpit stbd	48 ST	2-speed self-tailing	foresail sheet
3	companionway port	16	2-speed unusable self-tailing	mainsheet
4	companionway stbd	8	1-speed unusable self-tailing	raise/lower centerboard
5	boom stbd	8	1-speed	mainsail reefing/outhaul
6	mast port	30	2-speed	foresail halyards
7	mast stbd	16	2-speed	main halyard

See Sys_Descript_WINCHES for more comments on maintaining the winches.

Port Cabin Vent

Starboard Cabin Vent

Keel-Centerboard

The keel provides weight for righting moment, and also accommodates the slot for the centerboard. The centerboard is attached to the keel by a single hinge pin at the forward end of the centerboard slot. The centerboard pennant pulls the centerboard up (as opposed to pulling the centerboard down).

(See Owner's Instructions pages 4, 5, 5A for rigging and adjusting the centerboard pennant and tag line, and pages 14, 15, 15A for replacing the pennant.)

TODO: find weights of keel and centerboard.

Operation Hints:

• DO NOT let the pennant run free! I.e., don't let the centerboard drop!
• The instructions show how to place the block on the pennant so that the tag line will allow full upward position of the CB, and also allow full extension of the CB when the tag line is freed.
• Simplistic guidelines for deploying the centerboard:
  • deploy down when on the wind
  • pull up when running
  • keeping the centerboard down while backing improves steering control

Ship's Machinery

Power Train

Engine

Identifying info from tag on engine:

• model: Westerbeke 50
• horsepower: 41 HP at 3200 RPM (Note that our policy is 2000 RPM)
• serial #: 18P/830A/0247B911
• spec : 18360 2.1
• date : November 1979 manufacture decoded from "0247B911" of serial number
  (block #0247 per Svc Bul #132, or of engine per #242; date from "B911" )

REFERENCES:

• Our catalog of engine hardcover and web-based documents, including entries defining
  • Tech Manual (ENG_TM), and references to subsidiary tech info on this wiki and on the web
  • Westerbeke's Parts List (ENG_PL)
  • a link to the Parts List put on the web by an independent parts supplier
  • Westerbeke contemporary [sales brochure] (1979) (publication LP-1M 10/79)
• Tartan's Engine schematic dgm of 12-V DC circuitry which comes with the Engine
  • a Wiring Diagram of the circuitry on this schematic is in section Q of the Tech Manual

'Misc observations' (useful in troubleshooting):

Engine instrument panel gauges (05Sep07):

Water Temp gauge

* goes off left (cool) end with sender disconnected (good)

* sender shows 360 ohm @ 100 deg, 25 ohm @ 230 deg

Oil Pressure gauge

* goes off left (0 psi) end with sender disconnected (good)

(but note: Calder p.288 says most O.P. gauges go to high reading)

* sender shows 460 ohm @ 0 psi, 44 ohm @ 50 psi, 0 ohm @ 80 psi

See Tech Letter #72 page V.4 of Engine Tech Manual

"Gauges -vs- Senders non-Interchangeability"

engine mfgr has used 4 different gauge mfgrs for WT & OP, and each

requires sender by same mfgr; diagrams are given for configs of

connections for each manufacturer of gauge.

TODO: define here which make of gauges we have (so tested above),

and (a) mention it in the 2 sets of resistance readings above,

and (b) annotate Engine Manual

Transmission

* Appears to be a "Short Profile Sailing Gear" transmission, HBW Model 10

(page S.41 of Engine Manual, by comparing it to descriptions of

about 5 different kinds of transmissions described therein,

then getting the 5, 10 or 20 size from title in |Parts List)

* Type of transmission fluid: ATF type A, or Dexron II (per Engine Manual; Dexron III o.k. (per Hansen Marine)

* fluid quantity (for Model 10): 0.6 litre

Drive Shaft, Coupler, Stuffing Box

Propeller

The prop we got on Nevermore is fixed, 2-bladed, diameter approx 15-1/2 inch tip-to-tip, pitch unknown.

Note: the original standard prop was 16-inch fixed two blades [per www.practical-sailor.com Apr 2009 p.14]

TODO:

• look for a prop model number, and/or look for an info folder aboard
• look for a cutlass bearing model number or other info aboard
• can we measure pitch?
• measure shaft diameter (to replace zincs)
  • [Thom measured shaft just a little less than 1.5 inch, with dopey micrometer]
• mark shaft inside the boat for vertical position of blades

Note that aboard is a datasheet for a VARIABLE prop. We think it is for a 2-bladed prop too. A brochure says "Martec low drag propeller." And a 1985 (I think) application for a racing handicap listed Nevermore as having a variable prop. we assume this IMS handicap application was associated with the 1985 Bermuda race.

Steering & Binnacle

Wheel, Drive & Quadrant Mechanism, Rudder-Post

Per Owner's manual page 8, the Tartan-37 is equipped with an Edson Radial Drive pedestal steering system.

The "Information on maintenance ... included elsewhere in this manual" can't be found [ThomS Feb08].

TODO: Enter model numbers herein, and see if any ref material is on web.

NOTE: The "quadrant" is properly a "wheel" at the rudderhead [per Calder]; let's call it the "quadrant" unless talking to e.g. boatyard folk who know the difference; might have to say "rudderhead wheel" do distinguish it from the [steering] "wheel".

Emergency Tiller

(See Owner's manual page 8, STEERING)

• The tiller handle, a straight aluminum tube, is stored in the stern lazarette for immediate use.
• A bent tube, also a part of the emergency tiller, is left slid over the rudder post to accommodate the tiller handle.
• The emergency tiller doesn't allow as much rudder angle as the wheel, and force on the tiller can be considerable.
• Emergency steering may be easier, or at least less awkward, with the wheel removed.

Thoughts:

• The rudder can fail when something jams in the steering quadrant.
  • In which case, the tiller may not steer the boat.
    • One might mentally rehearse using the emergency tiller to work the jam free.
  • While responding quickly and resolutely, no crew should take chances at getting caught in the cabling or chains while unjamming the cables/quadrant.
  • One might mentally rehearse the sound signals for Vessel Not Under Command before needing the signal.
• One might rehearse on the water what the emergency tiller feels like when used with the rudder NOT jammed, to have an idea of whether it IS jammed when the steering breaks, since it usually requires a lot of force even when the steering is NOT jammed.

Autopilot

According to the Autopilot manual page 8, a basic autopilot system consists of:

• Control Unit (AP11)
  • located on port cockpit combing in driver's seat
• Junction Unit (J3000X)
  • located on fuel tank bulkhead behind nav station seat
• Drive Unit (no model # page 8, RPU80/RPU180 per diagram page 9)
  • located to port of steering quadrant in stern lazaret, attaches to underside of quadrant
• Fluxgate Compass (RFC35) (Serial No.: 13134E02)
  • located behind port settee, just forward of nav station.
  • front of compass is facing stern so it needs offset correction of 180 degrees during system setup.
• Rudder actuator (is this "Reversible pump RPU80 or 160" listed in the manual?
  • location: port quarter, attached to rudder quadrant
• Rudder Feedback Unit (RF300)
  • location: aft of steering quadrant, a little stbd of centerline; attaches to top of quadrant
• Course Detector Interface (CD135) (didn't see one; is this optional?)
• Rate Compass (RFC35R) (didn't see one; is this optional?)
• power feed from ship's 12V subsystem
  • switch #2 observed on vertical set of Nav station switches (we did not trace this circuit to the system (Fall '07))

STATUS:

• Fall '07:
  • we never tried to operate it
  • saw NO current load when AUTO PILOT circuit breaker was turned ON;
  • expected to see a stand-by current, but it MAY have been too small to observe since AP11 Control Unit max current < 1/2 amp when ON and illumination fully on
• Spring '08:
  • turning system ON at steering station Control Unit didn't seem to activate anything
  • removed actuator from rudderhead wheel because unit is frozen and steering was jammed

Bilge Pumps

Electric Bilge Pump

Jabsco Water Puppy (Model 18660-0121).

Specifications:

Body	Bronze
Impeller	Neoprene p/n 6303-0001, -0003 nitrite for oil-resistence
Voltage	12 Vdc
Amp Draw	8 amp
Fuse Size	15 amp
Port Type	1/2" Internal Pipe Threads
Dimensions	3 x 4-3/4 x 6-3/8 inches (7.6 x 12.0 x 16.2 cms)
Weight	4-1/2 lb (2 kg)

More information can be found in the Jabsco Water Puppy Technical Data Sheet

This pump is mounted on the port side of the stern lazarette. A white, corregated plastic ("Bilge-flex"), 3/4" I.D. hose leads from the bilge to the pump. A white, corregated plastic, 5/8" I.D. hose leads from the pump to a through-hull port on the starboard side near the stern. Note that this is the same through-hull fitting used by the manual bilge pump.

The bilge pump is wired directly from battery #1 to the 3-way switch on the nav station breaker panel. The up position manually turns on the pump. The down position puts the pump in automatic mode. When in automatic mode, a "float switch" will turn on the pump when water level in the bilge rises. A 15-amp fuse is inline with the positive lead from battery #1. The yellow rubber fuse holder for this fuse is strapped to the wiring harness that runs directly above battery #1.

Bilge Pump Switch Operation

UP	manual: pump runs continuously
CENTER	off: pump never runs
DOWN	automatic: pump runs when bilge water is more than 4 inches deep

The electrical float switch (which doesn't actualy float) for the bilge pump is a Jabsco 59400 series Hydro Air Bilge Switch. It is located behind the aft-most panel above the port bench in the cabin (just forward of the nav station). A black plastic air tube runs from the switch to a plastic air bell mounted in the bilge. Rising water in the bilge will increase air pressure in the tube and activate the switch.

More information can be found in the Jabsco Hydro Air Switch Operation Manual.

Manual Bilge Pump

This pump is mounted on stern lazaret to starboard of steering position. Its handle is tied to boat in stern lazaret. A second handle is aboard. Gray corrugated plastic hose, approx 1", leads from bilge to pump.

TODO: define hose to thru-hull, and position of thru-hull.

TODO: define model number, capacity, etc., of pump.

Head

Nevermore is equipped with a standard marine toilet and a plastic holding tank. It is classified as a "Type III Marine Sanitation Device", which means that the waste is not treated, it is simply stored inside the holding tank until it can be pumped out. Waste can be pumped out dockside via the opening on deck, or overboard using the manual pump when more than 3 miles from shore.

The yellow handled seacock under the sink in the head allows seawater to be pumped into the toilet bowl. This seacock also serves as a scupper for the sink.

If the flush valve next to the hand pump is in the "flush" position (vertical), then seawater will be pumped into the bowl when the the hand pump is operated. If the flush valve is in the "pump dry" position (horizontal and to port), then no seawater will be added to the bowl during pumping.

The hand pump simultaneously pumps seawater into the bowl (if the flush valve is open) and waste out of the bowl. Waste is pumped to the holding tank. The holding tank has a volume of XXX, or approximately 20 uses of the toilet.

The holding tank has three hoses: a 2" inlet, a 2" outlet, and a vent hose. The vent hose leads to the deck. The outlet hose leads to a Y valve. One side of the Y leads to the pump out port on deck. The other side of the Y leads to the sewage out thru-hull, via an anti-siphon valve.

There is a vestigial hose remaining from the deck. This hose was used to flush the holding tank with freshwater from a dockside hose. It is no longer attached, and the deck fitting should not be used.

Maintenance:

• periodically flush the holding tank and hoses with fresh or salt water
• tighten pump as appropriate to reduce leakage at the handle
• replace pump seals and gaskets every 3 years or so
• use head conditioner during winter to reduce holding tank odors
• ensure that hoses do not retain any sewage during boat storage

Ice Box

The Alder/Barbour ice box system is cooled by ice or by DC refrigerating system. There are two levels in the cooler, separated by a wood lattice. Water from the ice box drains to the bilge. The refrigeration system has two parts, a compressor (mounted in the starboard lazarette) and an evaporator (located in the ice box). The thermostat is located in the back (outboard) part of the ice box.

The ice box is mentioned in the Owners Manual page 11.

STATUS: as of 07 Mar 2010, both the compressor and the thermostat have been removed from the boat.

TODO: record volume of ice box

Compressor

Danfoss BD2,5 102N3111

Stove

There is an alcohol stove/oven in the galley. The master shutoff is located just to port of the sink (next to the stairway). The unit is gimbaled for use underway, and there are clamps to keep pots positioned on the stove over the burners.

See T37 Owner's Instructions pages 16-17 for operation of the stove.

Based on experiences on Aleida with the same kind of stove, a few items of these instructions should be highlighted.

• The statement that "the gas is burned in much the same manner as in a home gas stove" is literally true, but somewhat misleading because it might imply that one turns on the gas, lights the stove, and is ready to cook. However, the steps 7, 8, 9, and part of 10 -- which comprise turning on the fuel [not yet a gas] and lighting the stove, imply a more complicated situation, and with good reason.

• Especially step 7 -- wherein we get some alcohol into the lower part of the burner -- is important to get right. We can suggest looking in the burner with a flashlight as the valve is turned on to "watch the alcohol flowing into the little pan," to make SURE not to get too much fuel in the little cup. Maybe the "one turn" on is an excessive amount to turn the valve on, unless the stove hasn't been used for awhile. In fact, with the valve open about 1/3 to 1/2 turn, as soon as you see any alcohol appear in the pan it'll be almost too much by the time you close the valve.

• Part of the instructions in step 8 include "if the flames are licking at the overhead, ... extinguish with water." So think about it: if you're gonna boil some water anyway, why not draw it BEFORE your first times at lighting the stove.

• We note that step 11's order of turn-off (master shut-off valve first, then burner valve) may be different from instructions in the paperwork that came with the stove, and was not used on Aleida as far as I [ThomS] knows. However, it does give a more safe condition for the stove when it isn't being used, by purging pressure from the fuel line before turning off the master shut-off valve.

Maintenance:

• clean stove top and oven after each use
• Clean out any spillage under the burners if a cooking utinsil overflows, after the burners cool.
• periodically flush and clean the alcohol tank

Fresh Water System

Page 10 of the T37 Owner's manual describes operation and maintenance of the fresh water system. The freshwater system has been modified, especially concerning filling the tanks, as mentioned later below. Nearly the entire freshwater system was replaced in August 2008.

The fresh water system is supplied by 2 tanks, a 30-gallon tank on the port side, and a 60-gallon tank on the starboard side. Each tank has 2 inspection ports which are easily accessed through the lower berth/bench on either side of the main cabin.

Valves under the cabin floor connect the two tanks. Either tank can supply water to the ship's fresh-water system, or both tanks can be linked together.

There are two fill fittings on the starboard deck; the forward fill fitting fills the port tank, and the aft fitting fills the starboard tank.

The original configuration had only ONE fill fitting. Nevermore's copy of the owner's manual has been marked up to indicate how to fill both tanks (the original configuration required filling the port tank through the starboard tank.)

Note the admonition (also on page 10, in the "HOT WATER" section) that the fresh-water pump should be ON while heating water using 110-volt shore power. The water is usually warmed by the engine's fresh-water cooling water. Heating water in this way does not require the pump to remain ON. In fact, there is no control to turn heating from the engine on or off.

This rough sketch of the water system was used (2007-08) to replace all the freshwater hoses; it indicates all associated devices and parts, and indicates their interconnections.

Maintentance:

• when underway, do not open both freshwater tank valves

Fresh Water Pump

Jabsco Par-Max 3.0 (Model 31395-3000).

Specifications:

Voltage	12 Vdc
Amp Draw	5.2 amp @ 10 PSI
Fuse Size	10 amp
Flow	3.0 GPM
Ports	"Snap-Fit" ports with 1/2" hose adapters
Dimensions	9 x 4.2 x 4.75 inches
Weight	4-1/2 lb (2 kg)

The water pressure pump is located just forward of the starboard tank, under the lower berth. Diaphram design allows pump to run dry without damage. Internal pressure sensor stops the pump when working pressure is acheived.

The freshwater pump was purchased and installed Summer 2008.

Maintentance:

• do not run the pump when tanks are empty or supply valves are closed
• drain completely in winter to avoid freezing

Fresh Water Strainer

Jabsco Pumpgard (Model 36400-0000)

Water from one or both tanks is filtered by a steel screen strainer which is inline just before the water pump. The strainer can be cleaned by unscrewing the plastic cover from the top, removing the cylindrical screen, and rinsing it out with fresh water.

The strainer was purchased and installed Summer 2008.

Maintenance:

• periodically clean filter if clogged

Fresh Water Accumulator

There is an accumulator downstream from the pump that minimizes water hammer and reduced pump cycling.

The accumulator was purchased and installed Summer 2008.

TODO: get model number

Water Heater

There is a water heater located beneath the cockpit floor in the center of the boat. Water is heated by engine coolant and/or 100V AC.

The water heater was installed by (barely) fitting it through the engine access panels on the port side of the engine, via the navigation berth. It will not fit through the starboard lazarette opening.

This unit was purchased and installed Spring 2008.

Raritan 1700 12-gallon, 120V heater, Model #171211

Specifications:

Electrical Recovery Rate	13 gallons (49.2 liters) per hour
Maximum Operating Pressure	Tank: rated at 150 psi (1034kPa) Pressure Valve: 50 psi (345kPa)
Current Draw	10 amps (120V AC)
Circuit Breaker	15 amps
Thermostat	Adjustable; Factory Set to 120°F (49°C)
Anode	Magnesium
Dimensions	?

Raritan Water Heater Manual

Maintenance:

• the magnesium anode should be checked once per year

Ship's Electrical Subsystems

The 12-volt DC wiring circuits and the 110-volt AC circuits are functionally and electrically isolated from one another, except for the 12-volt battery charger which is powered by 110-volt AC shore power. DC-to-AC ground isolation must be performed within the charger.

The Tartan 37 wiring diagram provided in the Owner's Instructions can be used as a general guide to Nevermore wiring. However, this Oct 1976 drawing is different from the 1980 as-built configuration as we deduce it, as discussed in comments to the wiring diagram.

The as-received (2007) configuration of wiring will be discussed in sections for 12-V DC and the subsection battery charger, and in section 120-V AC below.

12-Volt DC

Switch Panel at Nav Station

The switch panel above the nav table is organized into groups of controls including (from left to right):

1. Meters for battery voltage and current
2. Electric Bilge Pump Switch (switch #01)
3. Main Switch Sub-Panel - two horizontal rows of 6 switches or switch/breaker combination
   1. top row has 6 switch/breaker devices (switches #11 - 16)
   2. bottom row (probably) has 6 switch-only devices (switches #21 - 26)
4. Secondary Vertical Switch Sub-Panel - 7 switching devices a mix of switch-only and switch/breakers (switches #31 - 37)
5. Nav Instruments Sub-Panel

• See nav_station_switches for tables of usages of individual switches.
• See nav_station_switches_wiring for diagrams and discussions.

Meters (volts and amps)

Meter ranges: voltmeter 0 - 25 VDC; ammeter 0 - 50 A

Voltmeter quirk: it appears to read high by approx 1.4 or 1.5 volts. The zero-point for the meter has been adjusted to read battery voltages correctly therefore the zero-point will be off-scale.

• Note: an expanded-range voltmeter might be better, e.g. 9 - 15 VDC.

Ammeter reads only the current being used by some of the ship's systems, but not any usage by the engine; it especially does not indicate battery charging. (The ammeter on the engine control panel only shows battery charging current, so does NOT show any "discharge" current to the ship's systems like a car meter would.)

In addition, the ammeter terminal with 12-V feed from the batteries (red "thick" wire (approx #10-gauge) also has a "thick" white wire going back out of the panel via the wiring bundle; we suspect there's a ship's system which is powered by this wire which does NOT have its current reported by the ammeter.

TODO: trace the white "thick" wire from the ammeter and find the unknown ship's system.

Electric Bilge Pump Switch

• OFF, AUTOMATIC, or MANUAL operation of the single bilge pump.
• Voltage is ALWAYS on to this switch, even when main rotary switches are OFF.
• It is always connected to power from Battery #1, through an inline fuse located in the wiring harness above the battery. Removing the fuse removes voltage from the main panel's bilge-pump circuits.
• See Electric Bilge Pump

A note on terminology: The terms "bilge" and "sump" are synonymous on Nevermore; Tartan's original "sump" was a separate catch-basin for ice box and shower water, while "bilge" was used normally. As far as we know (Sep07), the "sump" isn't used any more, and we use the 3-way switch to provide

• TODO: mark up T37 Owner Manual page 11 to NOT talk about the "sump".
• TODO: check whether the refigerator (ice box) still drains water into any kind of sump.

Main Switch Sub-Panel (horizontal switches)

• Twelve combination switches/circuit-breakers arranged in two horizontal rows (switches #11-16 and 21-26).
• Battery voltage to this sub-panel's switches is OFF unless battery power is ON on one (or more) main rotary battery switch.
• No voltage is applied to the remainder of the 11 switches unless the upper-left-most switch of this sub-panel (named "MAIN") is on.

• See nav_station_switches for tables of usages of individual switches.
• See nav_station_switches_wiring for diagrams and discussions.

Vertical Switch Sub-Panel at Nav Station (switches #31-37)

Note that the horizontal sub-panel's "main" switch does NOT control power to this sub-panel; it is not separately fused.

• See nav_station_switches for tables of usages of individual switches.
• See nav_station_switches_wiring for diagrams and discussions.

Nav Instruments Sub-Panel

This control subpanel is completely disconnected.

Batteries

Batteries #1 and #2

• Batteries #1 & #2 controlled by top main rotary switch.
• They are "mixed use" (starting and deep discharge) batteries of the same type
• They are located below nav station seat: #2 is fwd, #1 aft
• Model: Powermaster DC-27P, flooded, 750 MCA, 200 min reserve

Battery #3

NOTE: there is NO Battery #3!
It and its wiring were removed early 2009,
but we have not updated references to it in this section
nor in linked-to subsections.
Its rotary main switch still exists but is not wired.

• Battery #3 is controlled by bottom main rotary switch.
• It is a "heavy duty marine starting" battery
• Located under the stairs, just forward of the engine.
• Model: Powermaster (unknown model), flooded, (unknown values)

Rotary Battery Switches

• The two rotary battery switches are Guest 2300A, 360-amp, 600-amp momentary.
• Both have alternator field disconnect (AFD) but they are not wired, hence it is very important that at least ONE battery be selected ON at all times while the engine is running.

There is NO alternator protector (West Marine catalog index term) to prevent over-voltage from blowing the alternator's diodes when all batteries are turned "OFF" while running the engine; nor are the AFD (alternator field disconnect) contacts on the main switches wired (nor can they BE wired, with the present wiring of the bottom switch Batt #2 contact.)

• See Main Batteries Usage Strategies for instruction and rationales for battery switching and use.

• See Main 12-volt Control Schematic Diagram which includes schematic (graphic) and a walk-thru of circuitry (text).

Navigation Lights

Tri-Color/Anchor/Strobe

• Model: Aquasignal Series 40: tricolor / anchor / strobe, quicfits (Model # 40806)
• "Quicfits" connector means that the unit can be easily unclipped from the top of the mast by sqeezing the black tabs at the bottom of the unit and pulling the whole assembly up.

• Bulbs:
  • tricolor: 12V, 25W, 15D bayonet base (Aquasignal Part# 90002)
  • anchor: 12V, 10W, 15D bayonet base (Aquasignal Part# 90005)
  • strobe: 12/24V, 8W, Xenon Strobe (Aquasignal Part# unknown - maybe 90009)
• Visibility (from Aquasignal website):
  • tricolor: 2nm
  • anchor: 2nm
  • strobe: 3nm
• Aquasignal Website

Steaming/Foredeck Light

Make and model is unknown. Similar models use 10W bulbs for steaming light and 20W flood bulbs for foredeck illuminaton.

• TODO: determine make and model
• TODO: determine bulb types

Sidelights

The sidelight fittings have red and green lenses. They use a double-contact bayonet-base bulb. Base-diameter is 19/32", and bulb is 1-3/8" long. Nevermore's sidelights are required to have 1 Candlepower (cp) of luminous intensity.

Bulbs that came with Nevermore are 12v, 3W, 4.5cp, such as Seadog Part# 441032-1.

As of August 2009, two spare bulbs were aboard, Ancor Part# 520090: 12v, 7.5W, 6cp.

Sternlight

• TODO: determine bulb type

120-V AC Battery Charger

Xantrex Truecharge 10TB Multistage Battery Charger.

This charger uses microprocessor-controlled three-stage charging:

• Bulk: Replaces 70-80% of the battery’s state of charge at the fastest possible rate.
• Absorption: Replenishes the remaining 20-30% of charge, bringing the battery to a full charge at a slow, safe rate.
• Float: Voltage is reduced and held constant in order to prevent damage and keep batteries at a full charge.

Specifications:

Output current	10 A @ 14.5 V nominal
Output voltage (charge)	14.2 - 14.4 VDC
Output voltage (float)	13.5 - 13.8 VDC
Input voltage	90-135 VAC, 50/60 Hz)
Number of battery banks	2
Configurable battery settings	Sealed (Gel & AGM) / Flooded
Recommended battery size	25 Ah to 100 Ah
Dimensions (H x W x L)	2.75 x 6.7 x 15.1 inches
Weight	3 lb
AC Connector	3-prong 15A household plug
DC Connectors	Two 2-pin molex connectors

Documentation on this charger:

• File:Xantrex Truecharge10B OwnersManual.pdf
• File:Xantrex Truecharge10B DataSheet.pdf
• File:Xantrex Truecharge10B TechNote.pdf

Note: This charger is not yet installed. See the Upgrade 120v Electrical System task for more details.

The previous battery charger was Battery Charger Raritan R3012-3. It was removed from the boat in July, 2008.

120-volt AC

120-volt AC power is supplied to the ship via a standard male twist-lock shore power connector (NEMA type L5-30), mounted on the exterior of the port-side cockpit coaming by the stern.

• Note: The shore power is the aft-most of 2 connectors. The other connector was for "phone" and is completely disconnected.

Two switches/breakers are mounted on the aft side of the "Emergency" supplies cabinet next to the nav station. The Tartan documentation lists these as 20-amp breakers, although no amperage is designated on the actual breakers.

The left breaker is labeled "110 V AC" and supplies power to standard household AC receptacles (NEMA type 5-15). One pair of receptacles is above the galley sink, and another pair of receptacles on the aft side of the sink cabinet in the head.

The right breaker is labeled "WATER SYSTEM" and supplies power to the water heater. The power cable to the water heater is not connected (as of Nov 21 2008). The "110 V AC" breaker does not need to be switched on for the water heater to work. However, the Owner's Instructions pp. 10-11 demands that -- when the water heater 110V breaker is ON -- the freshwater pump must also be left ON.

All 120v cables terminate in a round plastic junction box located on the port side, just forward of the nav station, in a cabinet where life jackets are stowed.

• Note: The ground connectors of all receptacles and cables are all connected together but none are connected to the DC grounding/bonding system of the boat.

The Tartan 37 wiring diagram provided in the Owner's Instructions Section V presents the 120V-AC circuitry on Nevermore as MIT received her, except that the battery charger isn't shown. (Remember that the 12V-DC circuitry on this schematic can only be a general guide to some circuit configurations.) Note that this diagram explicitly states that "shore power is totally independent from ship's ground;" i.e., it is unlikely any galvanic isolator or isolation transformer was removed from the boat like one might think.

The diagram below shows the 120V-AC configuration after the battery charger that came with Nevermore was removed.

Miscellaneous notes:

• Two shore power cords are aboard, both with 30A (120-volt) locking connectors. Each is probably 25 foot length or more.
• Three or four short converter cables convert from male "marine" locking connector (on dock) to 3-pin "household" female; "household" male to "marine" female to the boat; don't remember the 2 others, probably e.g. 120-volt 50-amp locking male to 20/30-amp and/or 1 leg of 240-volt locking male to 20/30-amp locking female.

TODO:

• define and implement AC -vs- DC grounding circuit and circuit breakers to
  • provide isolation of AC & DC grounds to preclude galvanic action on ships parts
  • provide safety grounding and circuit-breakers to prevent crew electrocution or fires for a mis-wired AC feed
• check the config of the 2 short converter cords Thom can't remember what are (see above).
• measure length of the two long cords.
• define steps for polarity checking of the shore power source: for example, something like:
  • first choose shore power adaptor to get to 30-amp shore-power receptacle (if required);
  • use shore-power -to- flat-pin ("household") connector to then use ground-test lights unit to check the dock's configuration; (use boat end of shore-power cable if dock power is 30-amp connector)
  • connect shore-power cable to boat;
  • (can also) use ground-test lights unit in ship's flat-pin receptacles.

Anti-Electrolysis

See also discusssion of Electrolysis (AKA "galvanic corrosion" and "stray-current corrosion".)

Grounding/Bonding System

A copper "backbone" grounding wire (#xx gauge) has been installed low in the boat, running from the bow, via the bilge, thence toward the stern. Appropriate electrical systems and metallic parts are attached to the grounding by clamps positioned on the cable and near the parts.

Items that are connected to the "backbone" grounding wire:

• terminal block with 12-volt grounding of
  • engine
  • battery "-" returns
  • WHAT ELSE?
• WHAT ELSE?
• backstay

Zinc Guppy

Cable should be cleated on a stern cleat, threaded through ship's wheel, and clipped to backstay.
Note that stern pulpit and lifelines are not grounded (2007).

Zincs in Engine

There are two pencil-zincs protecting the engine; one is in the heat exchanger, and one is in the oil cooler.

See Engine zincs replace 2007 for a report and discussion of originally replacing the two engine pencil-zincs.

See the Engine Zincs Replace 2009 section of the same document for 2009 replacements of these 2 pencil-zincs.

See pp.220-221 Westerbeke Parts List, item 33, #11885

• pencil-zinc in heat exchanger item 23
• pencil-zinc in lube oil cooler item 32

Engine manual mentions something like "zinc in heat exchanger" (p.20) but doesn't mention one in oil cooler.

Zinc on Prop-Shaft

P1090819-zincs-2007-144p6q shows the prop-shaft zincs Fall 2007, printed large enough to show their inhabitants and erosion of the zinc a bit. Two new zincs were installed on prop shaft Spring 2008.

Anode in Water Heater

There is a magnesium anode in the water heater. [See water heater section.]
Note that this anode is in the engine fresh cooling water circuit; a zinc anode is NOT applicable. Anodes can be ordered from Raritan; the manual says anode part number is 1790010 for our 12-gallon tank.
TODO: Locate the anode on the unit and document it herein.

Lightning Dissipation

Nevermore has NO specific mechanisms for lightning dissipation.

Electronics

Fathometer

Model: Datamarine SL200DL

Serial No.: 012726

Depth Transducer:

• Model: Airmar B17 "Retractable Low Profile"
• Frequency: 200kHz
• Part No. (on cable tag): 31-241-3-01
• Purchased new: May 2008

Powered on by "NAV INST" circuit breaker on Nav Station Switch Panel 1. "MAIN" breaker switch must be on.

Tested on Aug 11, 2008. Depth sounder reads 25 feet in 28 feet of water.

Knotmeter

Model: Datamarine DCS100

This instrument is missing. It was last seen Fall 2007.

The speed transducer is in the posession of Ted Young.

The "dummy plug" core is in place in the boat.

Windmeter

Model: Datamarine LX360

Serial No.: 012128

GPS - Fixed Mount

Model: Garmin GPSMAP 276C

Software Revision: 5.20 (current as of Jun 9, 2008)

Specifications:

Unit dimensions: WxHxD	5.7" x 3.2" x 1.9" (14.5 x 8.1 x 4.8 cm)
Display size: WxH	3.0" x 2.2" (7.6 x 5.6 cm)
Display resolution	480 x 320 pixels
Display type	256-color TFT
Weight	13.6 oz (385 g)
Battery	rechargeable internal lithium-ion
Battery life	up to 15 hours
Waterproof	yes (IPX7)
Antenna	detachable 50-ohm BNC
NMEA input/output	NMEA 0183
Basemap	yes
Built-in memory	none (cannot load maps to internal memory)
Accepts data cards	Garmin data cards
Waypoints	3000
Routes	50
Track log	10,000 points

Features:

• Garmin sonar compatible: yes
• Supports DSC (displays position data from DSC capable VHF radio): yes
• Audible alarms: yes
• Tide tables: yes
• Hunt/fish calendar: yes
• Sun and moon information: yes
• Automatic routing (turn by turn routing on roads): yes
• Headphone jack/audio line-out: yes

Garmin Chart Cards:

• Bluechart: Cape Cod: Model US003R (Jun 2007)

Gloucester through New London, including Narragansett Bay, Block Island, Martha's Vineyard, Nantucket Island, the entire Cape, and includes general coverage Georges Bank

• Bluechart: South Maine: Model US002R (< 2006)

Penobscot Bay through Gloucester, including Casco Bay and Cape Ann

Documentation:

• [Owner's Manual]
• [Quick Reference Guide]

GPS - Handheld

Manufacturer: Magellan

Location: drawer under nav station

RADAR

• Display: Ratheon R20XX display unit (mounted to the left of the nav station)
• Antenna: Raytheon R20XX raydome antenna (mounted on the mast)

Status (May 23, 2008) System has been tested "on the bench" and appears to function correctly. See full status report

RADAR detector

C.A.R.D. (Collision Avoidance Radar Detector)

• Manufacturer: Survival Safety Eng., Inc.
• Model No.: 060
• Serial No.: 9140470604

Detects radar signals from other boats and sounds alarm and indicates octant of bearing to the ship.

Not installed as of June 9, 2008

VHF Radio - Fixed Mount

Tranceiver:

Model unknown

Coax Cable:

• 16(19X29) stranded tinned-Cu center conductor
• Foam dielectric
• Type IIA white marine jacket
• Nominal Impedance 50 Ohm
• Velocity of propagation 78%
• Outer diameter .242"
• 98% tinned Cu braid.
• installed new cable in mast: May 2008

VHF Antenna:

• Manufacturer: Digital Antenna
• Model: 200 Series: 222-VW
• 3-foot stainless steel antenna mast
• Quick antenna mast disconnect
• Connector: UHF female (SO239)
• Impedance: 50 ohms
• Max Power: 100 watts
• 3dB gain
• VSWR: < 1.2:1 @ 156.8 MHz
• Ordered new: May 2008

VHF Radio - Hand-held

Model: Icom VHF Marine Tranceiver IC-M34

• Serial No.: 0115406

Features:

• Submersible (1m depth for 30 min.)
• Dual/Tri-watch functions
• Weather channel reception
• Auto Scan function

Charger: Icom Desktop Charger BC-173

Specifications:

Transmit Frequencies	156.025 - 157.425 MHz
Receive Frequencies	156.050 - 163.275 MHz
Usable channels	INT, USA, CAN, WX channels
Type of emission	16K0G3E (FM)
Transmit Current (at 5W output)	1.5A
Receive Current (at AF max.)	200mA
Antenna Impedance	50 ohms (SMA)
Dimensions (WxHxD)	2-7/16" x 3-13/16" x 1-17/32" (62 x 97 x 39 mm)
Weight	10.8oz (305g)
RF output power (Hi/Low)	5W, 1W (2W w/ alkaline batteries)
Audio output power	0.35 W

Saftey Gear

PFD's

• West Marine Inflatable PFDs (red, without harness)
  • Uses Halkey-Roberts 840 Inflator cartrige
  • Use Rearming Kit 0905 or 0906