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Plumbing System

Fuel tanks:

Number and capacity: Four (4) main tanks totaling 2,250 gallons (8,517.18 liters) with one (1) centerline aluminum "Day Tank" at 31 gallons (117.3 liters) which will gravity feed from main wing tanks and center tank

FRP construction using fire retardant gelcoat on outside of tanks to meet ABYC standards section H-33.20 for FRP fuel tanks

Inspection plates appropriately positioned for interior access by average size man. Inspection plates to have label with all information stated in ABYC section H-33.16.3  Each internal baffle with a removable panel to allow access to entire interior of both fuel tanks

Fuel system to include an aluminum supply reservoir, which feeds by gravity from four (4) fuel tanks.  Top part of supply reservoir to hold approximately two (2) gallons (7.57 liters) and fitted with a sight gauge with a one (1) gallon (4 liter) range and 10th gallon (0.4 liter) marks for fuel consumption checks (supply lines are turned off and fuel is consumed from reservoir).  Bottom part of reservoir to be approximately 29 gallons (109.8 liters) fitted with a drain off at the bottom of the reservoir for water purging and with a water sensor - illuminating a light in wheelhouse if excessive water is present.  Reservoir fitted with four draw spigots for main, generator, wing engine and spare - mounted at lower level of reservoir but above water sensing probe.  All returns from main, wing and generator plumbed into reservoir

Sight gauges provided for two (2) engine room fuel tanks and vented into main vent system for each tank per PAE design

Each tank to be air tested to 4 lbs (0.28 bar) per sq. inch 

Provide baffles on 24" (61 cm) centers with removable panels for access to all areas of tank

A transfer manifold and Walbro (WLB 6803)24 volt fuel pump with timer switch and Racor 900 fuel filter which can transfer fuel from one tank to another and scrub fuel while transferring.  Transfer is also used to fill top part of supply reservoir for consumption testing when main fuel tank level drops below the level of the testing part of the reservoir 

System to be built per PAE design

Tanks to be filled with 200 gallons (757 liters) diesel before shipment to U.S. for testing system and running boat from port to port

Fuel pipe and hose:

Supply lines from tanks to supply reservoir are 3/4" (1.9 cm) I.D. with Aeroquip brand fuel hose and swaged brass fittings

Fuel line from supply reservoir to main engine filter is 3/4" (1.9 cm) I.D. with Aeroquip brand fuel hose and swaged brass fittings

Fuel lines from supply reservoir to optional generator and wing engine to be 1/2" (1.27 cm) I.D .with Aeroquip brand fuel hose and swaged fittings

Vent lines to be fuel certified, reinforced hose 3/4" (1.9 cm) I.D. Each tank to have two vents, one forward and one aft

Return lines to be 1/2" (1.27 cm) I.D. Aeroquip brand with swaged fittings

Fuel fills to be 2" (5.08 cm) I.D. Trident approved fuel hose

Interior surfaces of tanks to be vacuumed and wiped down prior to final closure to ensure no contaminates enter the fuel system from the tanks

All hardware that comes in contact with fuel to be bonded into the ships bonding system

Water tanks:

Number and capacity: One (1) baffled tank totaling 600 gallons (2271.25 liters)

FRP construction using FDA approved gelcoat on inside surfaces per plan

Inspection plates: appropriately positioned for access 

Each tank air tested: 4 pounds (0.28 bar) per sq. inch

Wema water tank gauges

System built per PAE design

Interior of tanks to be vacuumed and wiped down prior to final closure

Water hoses:

Cold water: 1/2" (1.27 cm) diameter Whale brand tubing system or equivalent with all Whale fittings

Hot water: 1/2" (1.27 cm) diameter Whale tubing with all Whale fittings

Sea water hoses: Trident reinforced rubber certified for marine use and provided with double stainless steel clamps below the water line

Water lines from tank to pump and from pump to accumulator to be 1" (2.5 cm) I.D. reinforced hose suitable for potable water. All lines after accumulator are to be 1/2" (1.27 cm) I.D. Whale brand

Water heater:  40 gallon (151.42 liter) for 220 volt and heat exchanger operation

Thru Hulls:  bronze body, stainless steel balls and Teflon seats

Grounding wire: #6 gauge green wire

Each thru hull to have a clearly visible tag indicating its function

Fresh water pressure pump: Head Hunter "Mach 5"  #M5-115 , 115 volt 

Accumulator tank: One (1) Groco #PST-3

Plumbing fixtures:

Head sink: Sea-Land #1620 oval, color white

Galley sink: double stainless steel side by side Kohler model #K-3351

Pilot house sink: Scandvik SS #101001-10

Head faucets: Grohe model #33170 000 chrome

Galley faucet: Grohe model #33893000 chrome

Guest shower fixtures: Grohe chrome #28421 handle, #28856 mount and soapdish, #28666 24" (61 cm) shower bar, #28151   59" (149.9 cm) non-metallic hose, #19183 mixer

Owner's shower/tub fixture: Factory supplied oval acrylic tub 'seaside white' 60"x42" (152.4 cm x 106.7 cm) with Kohler pop up drain

Aft deck console: Grohe model #33939 ILO chrome with white

Fresh water wash down fittings: Scandvic #11204 stainless steel hose spigot x four (4) (aft deck, foredeck, engine room and flybridge/boat deck)

Gray water tank:

Galley sink, head sinks, shower sumps and washing machine drain to 110 gallon (416.4 liter) sump tank.  Each drain to have an appropriate water trap to control odors.  Sump to include Sealand Tank Watch 4  24 volt level indicator and a Sealand T24 waste pump fitted with an 24 volt Ultra Jr. pump switch #WPS-02-24/32 and auto/manual control panel. Whale/Henderson #BP0527 hand operated diaphragm bilge pump to be installed in line with Sealand T24 for manual pumping of gray water tank per PAE design 

Bilge pumps: per PAE design

Electric:24 volt Par 34600-0010 diaphragm with 24 volt Ultraswitch auto switch

Manual: Edson model #638AL operable from main salon

High water bilge pump 24 volt Rule 3700 gallons (14,006 liters) per hour (#16A) - mounted in bilge above normal bilge water height including Ultra Sr. pump switch #WPS-01-24/32 and Ultra bilge alarm #WA-201


Tecma fresh water flush only 24 volt

Heads fitted with a Par #45510-1000 Y valve allowing sewage to be pumped overboard or into holding tank

Holding tank:  FRP

Holding tank pump: Sealand T-24 24 volt plus Whale/Henderson #BP0527 hand operated diaphragm pumps to be installed in-line with each other per PAE design

Holding tank fitted with a deck pump out

Sealand Tank Watch 4 monitoring system

All hoses throughout boat to be Trident brand with CE approval - where practical

LPG system: 

Two (2) Worthington #D200145WCI 20 lb.(7.5 kg) LPG bottles under FRP stairway to boat deck

Xantex control panel and detection system S-2A and MS-2 sniffer with voltage reducer #CNV-12-1 for 24 volt service

2-stage regulator #12301411

Trident 'Pig Tail' hoses x two (2) #1014140120

All necessary pipe fittings and adapters

System to meet all ABYC and USCG regulations

Fresh water wash down at four (4) locations, aft deck, foredeck, engine room and flybridge

*Specifications subject to change without notice and at the discretion of designers and builders.
**Dimensions are subject to change with Buyer’s selected options and personal effects which may add to displacement and increase both draft and waterline length

Last updated:5/27/11




Nordhavn Fleet