Engine
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Total Power
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Engine Hours
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Class
Trawler
Length
48ft
Year
2025
Model
475
Capacity
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Boat Details
Description
The Nordhavn 475 will be based on the hull of the Nordhavn 43 but she will be a much different boat, starting with a completely new deck and flybridge. The N475 represents the sleeker, elongated look of modern Nordhavns with the incorporation of an extended cockpit and boat deck, providing not only a more streamlined profile, but also allowing for greater space in the cockpit and more room up top for toys and a bigger tender.
About Nordhavn
Measurements
Dimensions
Nominal Length:47.5ft
Max Draft:5.25ft
Beam:14.83ft
Length at Waterline:42.75ft
Weights
Dry Weight:62,400Lb
Tanks
Fresh Water Tanks:300gal
Fuel Tanks:1200gal
Holding Tanks:50gal
More Details
Structure
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Hull lamination schedule per construction plan
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Vinyl ester resin used in first laminations
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All exterior gel coat – white Ferro Super Shield on superstructure and Arocoat brand on hull and non-skid
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Deck lamination schedule per construction plan
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Core:
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Cabin side (vertical surfaces): Foam Klegcell R75 or equivalent cross-linked foam
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Cabin top and deck (horizontal surfaces): End grain balsa 9-12 lbs. per sq foot Baltek
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Hull interior: Solid series of laminates
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Deck/hull joint:
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Between deck and hull flange: 3M 5200
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Inside of joint: Two (2) layers mat and woven roving
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Mechanical fastening: 1/4″ (6 mm) x 20unc thru bolted on 6″ (15 cm) centers where accessible. In areas that cannot be accessed self-tapping machine screws used
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Longitudinal Stringer:
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Hull: Five (5) full length port and starboard, engine beds and floor stringers – topside stringers – longitudinal and vertical
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Deck: Per design
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Interior floors as done on N60 – above engine room (salon) using deck beams and 2″ (5.08 cm) insulation with aluminum screening over
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Ballast: Internal lead – determined at time of launch (approx. 1/2 weight of fuel)
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Gel coat Color (standard boat):
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Hull: Arocoat #340 Gray
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Deck: Ferro White Supershield
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Non-skid: CCP #A139 Lt. Gray
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Boot-top and stack stripes: Arocoat #348 Dark Blue
Machinery
- John Deere 4045AFM85 M2 180hp @ 2400 – 24v start
- ZFW220 transmission with 3:96 to 1 reduction gear
- Engine instrument panel: Deluxe with instrumentation for oil pressure, water temperature, voltage, RPM, hour meter, with alarms
- Engine control levers Morse model #31001-001 Twin S
- Control cables – Morse 33C Supreme length to suit
- Keel cooler: Fernstrum BN1263B-E1
- Alternator: One (1) x Balmar 190 amp 24V with external regulator (see DC system)
- Propeller shaft: 2″ (5.08cm) A22HS
- Taper details: Standard S.A.E. taper
- Propeller: 4-bladed bronze – size TBD
- Stern tube: FRP
- Fiberglass
- Stuffing Box: Bronze
- Fuel filters: Duplex 75-900 – Racor #900 MA plus engine mounted filter x one (1)
- Dry exhaust: 4″ (10.2 cm) diameter stainless steel
- Flexible section: Stainless steel ‘wrinkle belly’ as needed
- In line cowl muffler
- Exhaust runs to head of FRP stack
- Drain valve and sump at turn of exhaust to drain off water while vessel is unattended
- Flexible exhaust mounts as needed
- Heat insulation material: Entire exhaust system wrapped with custom exhaust blanket
- Engine cooling system filled with suitable mixture of coolant/antifreeze to ensure coolant does not freeze for winter shipment
- Engine room floors: Fiberglass with non-skid – minimal wood structure used within engine room
- Engine room finish: Grey molded fiberglass with non-skid finish and insulated with Technitron or equivalent fire proof foiled and leaded foam 2″ (5.08 cm) thick. All exposed insulated surfaces lined with perforated anodized aluminum sheets
Engine room blowers:
- Two (2) 8″ axial fans
- Two (2) Dayton exhaust blowers
- Door from owner’s cabin to engine room is sound insulated with viewing port. White liner polyurethane finish. Teak veneer on stateroom side
Plumbing
Water tank:
- Number and capacity: Three (3) tanks totaling 300 gallons (1135.6 liters)
- Fiberglass construction using vinylester resin and FDA approved gel coat on inside of tank construction per plan – two poly tanks above
- Inspection plates: Appropriately positioned for access
- Two sight gauges to monitor water level in upper tanks
- Each tank air tested: 4 lbs (1.81 kg) per sq. inch
Fuel tank:
- Number and capacity: Two (2) main tanks totaling 1200 gallons (4542.5 liters) with one centerline aluminum ‘day tank’ at 40 gallons (151 Liters) which will gravity feed from main tanks
- Fiberglass construction with vinylester resin per plan
- Inspection plates appropriately positioned for interior access by average size man. Each internal baffle with a removable panel to allow access to entire interior of both fuel tanks
- Fuel system includes an aluminum supply reservoir, which feeds by gravity from both fuel tanks. Top part of supply reservoir holds approximately two (2) gallons (7.5 liters) and is fitted with a sight gauge with a one (1) gallon (3.5 liter) range and a 10th gallon (.4 liters) marks for fuel consumption checks (supply lines are turned off and fuel is consumed from reservoir). Bottom part of reservoir approximately 40 gallons (151 liters) fitted with a drain off at the bottom of the reservoir for water purging and with a water sensor – illuminating a light in wheel house if excessive water is present. Reservoir fitted with four draw spigot valves 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 both fuel tanks and are vented into the main vent system for each tank
- Each tank air tested to 4 lbs (1.81 kg) per sq. inch
- Baffles on 24″ (61 cm) centers
- A transfer manifold and Walboro (FRB13-2) 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
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 1/2″ (1.27 cm) I.D. with Aeroquip brand fuel hose and swaged fittings
- Vent lines are fuel certified, reinforced hose 3/4″ (1.9 cm) I.D.
- Install fuel fills on side decks – as on N40 with vent lines inboard
Water hoses:
- Cold water 1/2″ (1.27 cm) diameter Whale 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 heater: Seaward #S1100 or Attwood (11 gallon ) (42 liters) 110 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: #VSD31755-0000 Jabsco Sensor Max – 24v
- Plumbing fixtures:
- Head sinks: Sea-Land #1620 oval color white x two (2)
- Galley sink: double stainless steel Polar # 102110 with 3″ (7.6 cm) drain fittings
- Head faucets: Grohe Eurosmart – chrome
- Galley faucets: Grohe Alira – RealSteel®
- Shower fixtures: Grohe Tempesta – chrome
- Fresh water spigot on fore deck – cockpit – engine room
Gray water tank:
- Galley sink, head sinks, shower sumps and washing machine drain to 50 gallon (189.3 liters) sump tank. Each drain to have an appropriate water trap to control odors. Sump includes Sealand Tank Watch 4 level indicator and a Sealand T24 waste pump fitted with an Ultra Jr. pump switch and auto/manual control panel. Whale/Henderson #BP0527 hand operated diaphragm bilge pump installed in line with Sealand T24 for manual pumping of gray water tank per design
Bilge pumps:
- Electric: Par 34600-00 diaphragm- 24v -10.8 gallons (40.88 liters) per minute with Ultra switch auto switch
- Manual: Edson model #638AL operable from main salon
- High water bilge pump Rule 3700 – 24v – gallons (14,006 liters) per hour (55S) – mounted in bilge above normal bilge water height including Ultra Sr. pump switch and Ultra bilge alarm
Toilets:
- Tecma Silence Plus head in owners stateroom head – 24v
- Tecma Silence Plus head in guest stateroom head – 24v
- Head fitted with a Par #45510-0000 Y valve allowing sewage to be pumped overboard or into holding tank
- Holding tank: Fiberglass
- Holding tank pump: Whale hand operated diaphragm
- Holding tank fitted with a deck pump out
- Sealand Tank Watch 4 monitoring system with tank master – 24v
- All hoses throughout boat – Trident brand with CE approval – where practical
- Two stage regulator #12301411
- Trident ‘pig tail’ hoses x two (2) #1014140120
- All necessary pipe fittings and adapters
Interior Finish/Equipment
Galley
- Refrigerator: U-lines: One (1) refrigerator U-1224RINT-00B all refrigerator (teak panel) + one (1) refrigerator with icemaker CO1224FINT-00B (teak panel)
- Top load freezer: General Electric # FCM5SKWW or equivalent
- Countertops – Surell ‘Frost’ FR02 – made by Formica
- Flooring: Owner supplied tile
- Cabinetry/paneling: Teak with a satin varnish
- Miele electric induction cooktop and Miele single electric convection oven
- Stove exhaust ss hood
- Overhead: Individual padded vinyl panels secured in place with Velcro and easily removable for service
- Locker interior finish: Varnished teak
- Trash compactor: GE #UCG1680LSS or equivalent 15″ ss (38.1 cm)
- Microwave: General Electric #PEM31SFSS ss
- Overhead galley locker as shown on plans
Main salon
- Floors: teak and spruce
- Cabinetry/paneling: Teak with satin varnish
- Dinette table: Teak
- Furniture: Settees port and starboard as designed with all detail as shown in layout drawing – teak veneer with solid teak trim
- Overhead: Individual padded vinyl panel secured in place with 3M industrial Velcro
- Locker interior finish: Varnished teak
- Cushions with vinyl upholstery
- Teak valance over windows
Master cabin
- Floors: teak and spruce
- Cabinetry/paneling: Teak paneling – satin varnished with teak trim
- Mirror on forward bulkhead
- Overhead: Individual padded vinyl panels secured in place with 3M industrial Velcro
- Locker interior finish: Varnished teak
- Foam mattress with cotton mattress ticking
Heads
- Floors: Owner supplied tile
- Countertop: Surell ‘Frost’ FR02 – made by Formica
- Mirrors with satin varnished frames
- Shower floor: Molded fiberglass with non-skid finish
- Overhead: Individual padded vinyl panels secured in place with Velcro and easily removable for service
- Cabinetry/joiner work: Satin varnished teak
- Locker interior finish: Varnished teak
- Bi-fold shower door in owners head. White aluminum with glass panels
- Bi-fold shower door in guest head
- Single sliding pocket door into owners head
- Owners Head – shower sump pump – Whale Gulper 220 – 24v
Forepeak
- Painted with gray gel coat
- Drain to bilge through a PVC pipe installed during hull lamination
- Pilothouse
- Floors: teak and spruce
- Cabinetry/joiner work satin varnished teak
- Countertops: Black Formica
- Overhead: Individual padded vinyl panels secured in place with 3M industrial Velcro
- Table: Satin varnished teak
- Locker interior finish: Varnished teak
- Cushions with vinyl upholstery
- Chart light: F4 Touch LED Task light with bulkhead base
- Teak louvers on tops of console for ventilation of electronics
- Chart drawer under settee
Guest cabin
- Floors: teak and spruce
- Cabinetry/paneling: satin varnished teak
- Overhead: Individual padded vinyl panels secured in place with industrial Velcro
- Locker interior finish: Varnished teak
- Mattress: Foam with vinyl covering
- Double berth to port / single berth to stbd
- All locker doors have push button style latches
- Stateroom doors teak – door hardware – Mobella
LED Lighting
- Main overhead lighting throughout: Imtra ‘Hatteras PowerLED’ warm white with wall switches for each designated area (approx. 47 lights)
- Bulkhead reading lights: Four (4) Imtra ‘Hobart LED’ – with switch warm white two (2) for guest stateroom and two (2) for salon
- Engine room lights: Imtra LED IS60 – three (3) x 24″ (70 cm) (#ILIS60-12/24V)
- Lazarette lights: Imtra LED IS15 – two (2) x 10″ (25.4 cm) (#ILIS15-12V)
- Exterior lights: Imtra ‘Tacoma 155 LED’ cool white (2 on aft deck)
- Navigation lights: Hella NaviLED Pro
- Owners cabin reading lights Imtra ‘Venice LED’ chrome warm white with white shades. (2 total)
- Courtesy lights: Imtra ‘Yukon LED’ cool white exterior and red interior
- Overhead reading lights Imtra ‘Captiva LED’ with switch. Warm white (4 total)
- All hand rails shown on drawing included