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Standard Machinery

Main Engine: John Deere 6135AFM75 424 hp (single) @ 1900 rpm, keel cooled with dry exhaust & 24 volt starting

Gear Box: Twin Disc # 5114, with 3.43:1 electric shift, electric clutched 'C' PTO

Engine Instrument Panels: Murphy PowerView, six (6) start/stop locations total

Alternators: Two (2) 175 amp 24 volt DC belt driven

Engine Controls: Twin Disc Electronic controls, six (6) stations: wheel house, fly bridge and aft deck, port and starboard Portuguese bridge and engine room

Racor crank vent and air cleaner system

Two (2) 4D batteries connected in series for 24 volt start

Engine bed to have 3/16” (4.7 mm) stainless steel cap

Stainless steel rail around engine

Engine mounted on (4) vibration Isolator Polyflex mounts

Fuel Filter: One (1) Racor 75-900MAC duplex with 2 micron filter elements in addition to secondary engine mounted filter

Propeller: 4-Blade Hungshen "Silent" to be highest quality available 44” x 34.5” (111.76cm x 87.63 cm) - left hand rotation

Propeller Shaft: A22HT 3-1/2" (8.9 cm) diameter

Taper details: Standard SAE

Spurs line cutter on main engine shaft

Stern tube: FRP

Bearing: Rubber cutlass type at aft end

Stuffing Box: Bronze-traditional

Use "T" bolt clamps in lieu of hose clamps at the stuffing box

Keel Cooler

Jacket water circuit: R.W. Fernstrum # D1281U-E1

Engine cooling system to be filled with John Deere specified mixture of coolant/antifreeze

Engine room floors: All engine room floors and structural members to be FRP with white gel coated surfaces

Noise Control

Hull Damping - Area above the propeller rotation plane to be treated with two (2) layers of E-A-R Specialty Composites Isodamp CN Tiles (CN-62), alternating between resin and chopped glass to form a constrained layer damping system to be the inboard side of the shell plate. Installed as per figure 1

Engine room ceiling and fwd bulkhead treated with "Thinsulate". Inboard tank sides, aft bulkhead, underside of deck, forward side of engine room bulkhead and ventilation ducts to be treated with "Thinsulate" and covered with white aluminum panels. See standard interior drawing for interior bulkhead locations treated with "Thinsulate"

Salon/galley cabin sole to have 2" (5.08 cm) Nida Core" core system and 1/4" (.6 cm) "decoupler" layer

Engine room hatches to have rubber gasket and lock down mechanism

Soundown Quiet Pro lining covering engine room intake and exhaust ventilating ducts, 1” (2.5 cm) thick secured with epoxy and mechanical fasteners

Insulated bulkheads in living areas using 1" (2.5 cm) thick 3M "Thinsulate" between panels

Engine Room Ventilation: (See Air Conditioning Systems and Ventilation Systems)

Dry exhaust system: 6" (15.2 cm) I.D.

Muffler 6" (15.2 cm) I.D. with 6" (15.2 cm) inlet flange and 8" (20.3 cm) outlet flange. Inlet flange to be welded on - # TXS60TRS020

Custom exhaust blanket for engine room portion of exhaust

Exhaust piping under blanket is to be wrapped first with fiberglass tape

Stainless steel wrinkle belly sections per design

Soft mounted with Soundown mounts and spring hanger mounts per design

Wing engine: John Deere 4045AFM85, HE, 24volt, rated 160hp @ 2300

"V" drive Hurth marine gear 2.477:1 ratio

Heat exchanger cooled

Shaft: 1-3/4" (4.4 cm) diameter shaft A22HT

Spurs line cutter on wing engine shaft

Gori 3-blade folding propeller

50amp, 24 volt alternator

Twin Disc electronic controls dual station

Electronic front PTO 24 volt to operate hydraulics

Two (2) "Group 31" batteries in series for 24 volt start

20 gallon (75.7 Liter) day tank per PAE design

Racor 900 MA fuel filter with 2 micron filter element in addition to engine mounted filter between day tank and engine

Dual station panels, wheelhouse and flybridge. Also includes one "Power View" Murphy gauge

Engine bed to have 3/16" (4.7 mm) thick stainless steel cap

5" (12.7 cm) Centek exhaust check valve


Onan # MDKBT 27.5 KW 120/240 volt AC 60 Hz, 1800 RPM. Includes sound enclosure

Wet exhaust system using gen-sep

24 volt start

Alternator: 20 amp

ABT hydraulic system

38 hp bow and stern thrusters using 12" (30.4 cm) tunnels with proportional controls at five (5) stations

Hydraulically powered anchor wash pump - 180 gallons (681 Liters) per minute

Hydraulically powered 180 gallons (681 Liters) per minute emergency bilge pump with manifold system and plumbing to four (4) bilge areas

TRAC # 300 digital stabilizer system with 12 sq. ft. (30.4 sq cm) fins, kelp deflectors and dual station control. Fin winglets not included. System is without winglet assembly.

Maxwell VWC 4500 windlasses with dual station controls x one (1)

Hydraulics will be cooled by hydraulic cooling pump through heat exchanger

Vise in engine room at work bench

*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: 2/29/12


Nordhavn Fleet