Najad · Sailing yacht

Najad 400

The Najad 400 is a 12.20 m centre-cockpit cruising yacht drawn by judel/vrolijk & co together with the yard and built by Najadvarvet in Henån on Orust, Sweden, from 2001 to 2005; Najad presented it as the model that completed the move of its whole range to the judel/vrolijk design line. It has a bolted 4 t lead keel (2.0 m draught, 1.8 m as an option), a semi-balanced rudder behind a skeg, a fractional rig with twin spreaders, a fixed windscreen and a teak deck, and every boat was built to order on one of three fixed layouts. The engine is a Yanmar on a conventional shaft with a KM4A gearbox: the yard’s September 2003 specification names the 56 hp 4JH3-E, its March 2005 specification the 54 hp 4JH4-E. The successor, the Najad 405 (2005–2009), kept the main dimensions but has a taller rig, a spade rudder without skeg and a Volvo Penta D2-55S, so check which of the two you have before ordering parts. Najad no longer lists the 400 and has no owner’s manual online: its specifications survive as archived copies of the yard’s website, and the yard’s after-sales team and the owners’ clubs are the people to ask.

Manuals & documents

Najad no longer lists the 400, so most links go to archived copies of the yard’s own web pages and PDFs from 2002 to 2015 on web.archive.org; the rest lead to the yard’s current contacts and to two owners’ clubs. We host no manuals or drawings.

Equipment & its manuals

Standard equipment as the builder’s documents list it. Boats were ordered with options and refitted since — check what is actually aboard.

ItemModelManual / pageNote
EngineYanmar 4JH3-E1,2,3September 2003 specification: four cylinders, direct injection, fresh-water cooling, 41.2 kW (56 hp)Yanmar 4JH3E Parts & service pageOn four rubber mounts in a sound-insulated engine room, reached through a door in the passage aft and by lifting out the companionway steps; 1.4 kW starter, wet exhaust with swan neck, rubber silencer and water separator. Najad’s brochure of April 2003 and its magazine test quote 53.4 to 55 hp without naming the type, so read the engine plate.
EngineYanmar 4JH4-E4,5,6,7March 2005 specification: four cylinders, direct injection, fresh-water cooling, 39.6 kW (54 hp); the yard’s 2005 web page also gives 54 hpYanmar 4JH4E / 4JH4AE Parts & service pageInstalled as before: KM4A gearbox, flexible shaft coupling, four rubber mounts, 1.4 kW starter. The yard’s later model pages say only “Yanmar, 41 kW / 55 hp”, so read the plate to know which engine a boat has.
GearboxYanmar KM4A · 2.63:11,4Both specifications (2003 and 2005): mechanical reverse gear KM4A, reduction 2.63:1, single-lever control on the side of the steering pedestal—
Shaft & stern gearØ 35 mm stainless shaft1,4,5Both specifications (2003 and 2005): 35 mm shaft in acid-resistant steel with a flexible coupling, stern gland with a water-lubricated rubber bearing; the 2005 equipment list calls it “flexible shaft”—
Propeller3-blade fixed, bronze1,4Both specifications (2003 and 2005): fixed three-blade bronze propeller with a shaft anode; neither size nor make given—
Fuel filter—1,4Both specifications (2003 and 2005): a separate fuel filter, make not named; 230 l stainless diesel tank under the saloon sole—
WinchesAndersen 52ST × 2 · 40ST1,4,3,8Three stainless self-tailing sheet winches in both specifications; the deck plan of the 2003 specification labels them 52ST and 40ST, and Najad’s magazine test names size-52 self-tailing AndersensAndersen winch service kits at Ronstan: RA710001 for the 40ST made in 2006 or earlier, RA710008 for the 52ST up to version 2.5 (2009)On the mast: a stainless self-tailing halyard winch and a stainless reefing winch; the mainsheet leads to a stainless sheet winch; two lockable winch handles. Brackets on both cockpit coamings take genoa and spinnaker winches.
AnchorBow roller for 20 kg Bruce / 25 kg Delta1,4Both specifications (2003 and 2005): twin bow fitting with two integrated anchor rollers sized for a 20 kg Bruce or a 25 kg Delta; delivered with a 15 kg grapnel, 3 m of chain and 40 m of 16 mm warp. No windlass in the standard specification—
Mast & riggingFractional, twin spreaders · Seldén boom1,4Both specifications (2003 and 2005): silver-anodised alloy mast 16.8 m above deck, stepped on the coachroof over a steel pillar; stainless wire standing rigging with twin lower shrouds, rod kicker (with gas damper in 2005), topping lift and mechanical backstay adjuster; Seldén boom with internal outhaul and two reefing lines—The yard does not name the mast maker; the mainsail is specified with Seldén’s MDS car system “or equivalent”.
FurlerSeldén Furlex1,4,5Headsail furler with its control line led along the port stanchions to the cockpit (both specifications); the yard’s 2005 equipment list names Furlex, without a sizeSeldén Furlex Parts & service page
SailsNajad Original, triradial Spectra/Mylar1,4,5Standard: full-batten mainsail of 42 m² with two reefs and a 110 % working jib of 37 m²; a 140 % furling genoa, a heavy-weather jib, a storm jib, a spinnaker and a cruising chute were extras—
SteeringPedestal, rod steering · Ø 900 mm1,4Both specifications (2003 and 2005): GRP pedestal with a detachable, leather-covered stainless wheel of 900 mm, about two turns lock to lock, friction brake on the wheel shaft, rod linkage; emergency tiller on the rudder stock—Semi-balanced GRP rudder with a stainless stock behind a skeg; the stock is sealed by a greased stuffing box.
InstrumentsEngine panel · illuminated compass1,4Both specifications (2003 and 2005): engine panel in the starboard cockpit recess with rev counter, warning lights for charging, engine temperature and oil pressure with an audible alarm for the last two, key start, electric stop and hour meter; illuminated compass on the pedestal. Space for navigation instruments behind the windscreen and at the chart table, none fitted as standard—
ToiletManual pump toilet1,4,5,9Both specifications (2003 and 2005): one head amidships to starboard with a hand-pumped toilet discharging overboard or into the holding tank (about 60 l and an option in 2003, a standard 55 l stainless tank behind the toilet in 2005), with gas-tight hoses—The shower drains into a sump under the sole, emptied overboard by an electric pump. The yard offered a second head with shower forward as a layout option.
Water pumpPressure pump + foot pump1,4,5Both specifications (2003 and 2005): pressurised hot and cold water with an accumulator tank and a foot pump in the galley; the 2005 equipment list adds a pulsation damper—
Water heater40 l1,4Both specifications (2003 and 2005): water heater of about 40 l, in the space below and behind the starboard cockpit locker—
Fridge100 l ice box with cooling unit1,4,5Both specifications (2003 and 2005): well-insulated 100 l ice box with a refrigeration unit and hanging baskets; make not named—
StoveGas, 2 burners + oven, gimballed1,4,3Both specifications (2003 and 2005): gimballed two-burner gas cooker with oven, fixed gas pipes and a remote-controlled shut-off valve between cooker and bottle; Najad’s magazine test mentions a crash bar—
Gas system2 × 2.75 kg1,4,5Both specifications (2003 and 2005): two 2.75 kg bottles in the self-draining forward locker; the yard’s 2005 equipment list says Camping Gaz—
HeaterHeater, outlets in all spaces1,4,5Not in the September 2003 specification; standard in the March 2005 specification and in the 2005 equipment list, with outlets in all spaces; neither make nor fuel given—
Bilge pumpManual + electric 8 m³/h1,4Both specifications (2003 and 2005): a manual pump that can be worked from the cockpit with all hatches closed, and an electric bilge pump of 8 m³/h—
Batteries12 V: 2 × 145 Ah + 75 Ah1,4Both specifications (2003 and 2005): two 145 Ah domestic batteries and a 75 Ah engine battery; two main switches, one of them operated electrically from the panel at the chart table—
Alternators12 V / 80 A1,4Both specifications (2003 and 2005): 80 A alternator with a charge regulator for the start and domestic batteries—
Hatches & ports3 skylights · 12 portholes · 4 Dorades1,4Both specifications (2003 and 2005): three opening skylights (forward cabin, saloon, aft cabin; the forward and aft ones double as escape hatches), twelve portholes in the coachroof and four Dorade vents with stainless guards—
Canopy & T-topFixed windscreen + sprayhood1,4,5Both specifications (2003 and 2005): toughened-glass windscreen in an aluminium frame, with the sprayhood fitted in a groove along its top edge; a cover over the whole cockpit was an extra—
Deck coveringSolid teak, caulked1,4,5Both specifications (2003 and 2005): deck, cockpit seats, coamings and swim platform in solid caulked teak, teak capping on the gunwale; the coachroof has a non-slip finish with recesses prepared for teak—
Swim platformIntegral, folding ladder1,4Both specifications (2003 and 2005): swim platform moulded into the transom, with a folding swimming and safety ladder—
Fire extinguishers31,4Both specifications (2003 and 2005): three extinguishers, one of them under the saloon table and one in the starboard cockpit locker—

Specifications

Years built2001–2005 according to the yard; first launched in 2001 (Najad’s magazine)6,7,3
Designerjudel/vrolijk & co together with Najadvarvet AB1,4,10
BuilderNajadvarvet AB, Henån (Orust), Sweden1,6,11
Length overall12.20 m (40′4″)1,4,6
Waterline length10.44 m (34′3″)1,4,6
Beam3.85 m (12′7″)1,4,6
Draft2.00 m (6′7″) standard keel; 1.80 m (5′11″) with the shallow keel (extra)1,4,3
Displacement12200 kg1,4,6
Ballast4000 kg of lead, bolted on with acid-resistant bolts; ballast ratio 33 %1,4,3
KeelLead fin keel and a semi-balanced rudder behind a skeg, both with NACA sections; a shallower keel was an extra1,4
HullHull hand-laid as a sandwich of triaxial roving and ISO polyester with NGA gelcoat, epoxy primer below the waterline; deck and coachroof hand-laid GRP sandwich, bolted and laminated to the hull; main bulkheads laminated to the hull on both sides1,4
Sail area79 m² with mainsail and working jib (42 m² full-batten mainsail + 37 m² 110 % jib; “cruising” in the 2003 and 2005 specifications); 75 m² with jib in Najad’s magazine test; 85 m² on the yard’s later model pages1,4,3,6,7
Mainsail42 m² full-batten mainsail in both specifications; 39 m² in the April 2003 brochure, 40 m² on the 2005 web page1,4,2,5
Genoa110 % working jib 37 m² (35 m² in the brochure and on the web page); extras: 140 % furling genoa 53 m², heavy-weather jib 28 m², storm jib 16 m²1,4,2,5
Light-air sailsSpinnaker 136 m² (130 m² in the brochure and on the web page) and cruising chute 112 m², both extras1,4,2,5
Rig dimensions (I, J, P, E)I 16.05 m, J 4.68 m, P 15.10 m, E 5.00 m (sail plan in the September 2003 specification)1
Air draft17.25 m above the waterline in the April 2003 brochure, Najad’s magazine, the 2005 web page and the March 2005 specification; the September 2003 specification gives 18.50 m. Both specifications put the mast at 16.8 m above deck1,4,2,3,5
DimensionsTransport height 4.38 m (14′4″)1,4
HeadroomSaloon 1.97 m, head 1.95 m, aft cabin up to 1.82 m1,4,3
Engine optionsYanmar throughout: 4JH3-E with 41.2 kW (56 hp) in the September 2003 specification; 4JH4-E with 39.6 kW (54 hp) in the March 2005 specification and on the 2005 web page; the yard’s later model pages give 41 kW / 55 hp1,4,5,6
DrivePropeller shaft (35 mm) with flexible coupling and KM4A gearbox, 2.63:11,4
Fuel tank230 l (51 imp gal), stainless steel, under the saloon sole1,4,6
RangeNearly 650 nautical miles under power with the optional extra tank (Najad’s magazine test)3
Water tank600 l in the September 2003 specification, the April 2003 brochure and Najad’s magazine; 550 l in the March 2005 specification and on the yard’s later pages. Stainless tanks in the port and starboard saloon settees with gauges, plus a collector tank in the bilge1,2,3,4,6
Holding tankStainless tank behind the toilet: about 60 l as an option (September 2003 specification, and in the data of the 2005 web page), 55 l as standard (March 2005 specification; the 2005 web page lists the tank with deck pump-out under basic equipment); the April 2003 brochure gives 67 l1,4,2,5
CabinsStandard layout A: forward cabin with two berths of about 2.0 m, saloon with two settees, L-shaped galley amidships, forward-facing chart table and the head to starboard, and an aft cabin reached by a passage to port, with a single berth each side. Layouts B and C at extra cost; the yard names two aft cabins and a second head with shower forward among the options1,4,9
Berths5–63
VersionsSemi-custom: each boat built to order with layout A, B or C, standard or shallow keel and a long list of extras. The standard specification grew between 2003 and 2005 (heater and holding tank standard by 2005, Furlex named, water given as 550 instead of 600 l); Najad’s magazine mentions a carbon mast delivered to one owner1,4,5,3
SuccessorNajad 405 (2005–2009 by the yard’s count): same length, beam and displacement, taller rig, balanced spade rudder without skeg, Volvo Penta D2-55S12,13,14,15

Good to know

  • Read the engine plate before ordering filters, impellers or belts. Najad’s own documents name two Yanmars, the 56 hp 4JH3-E in the September 2003 specification and the 54 hp 4JH4-E in the March 2005 one, both with the KM4A gearbox, while the yard’s later pages just say “Yanmar, 55 hp”. Don’t go by the Najad 405 either: it has a Volvo Penta D2-55S.1,4,6,14
  • Measure the air draft yourself before a low bridge or a road transport: Najad gives the mast height above the waterline as 17.25 m in most documents but 18.50 m in its September 2003 specification, while both specifications put the mast at 16.8 m above the deck. The yard’s transport height is 4.38 m.1,4,2,5
  • The 400 has a conventional shaft, not a saildrive. At a haul-out look at the stern gland with its water-lubricated rubber bearing, the flexible shaft coupling, the shaft anode on the fixed bronze propeller and the greased stuffing box that seals the rudder stock behind the skeg.1,4
  • Every 400 was built to order and the standard specification changed: the heater and a 55 l holding tank are standard in March 2005 but not in September 2003 (when a holding tank was an option), and the yard’s fresh-water figure drops from 600 to 550 l. Check what a given boat actually has before buying spares or planning a refit.1,4,5
  • The sheet winches are stainless Andersen self-tailers (52ST and 40ST on the 2003 deck plan). Andersen winches are now sold by Ronstan, which still offers service kits for winches of that age: RA710001 for a 40ST made in 2006 or earlier and RA710008 for a 52ST up to version 2.5 (made in 2009 or earlier).1,3,8
  • There is no owner’s manual online. The yard’s specifications, brochure pages and model sheets survive as archived copies (linked above); for anything else ask Najad’s after-sales coordinator in Henån or an owners’ club: Najad Club Nederland offers the yard’s product information for each model, and Najadklubben Ostkusten a documentation file on the 400.16,17,18,6

Videos & how-tos

Links to YouTube, nothing embedded. The maker’s own channel comes first; the rest are channels we found clear and correct for this model.

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Sources

  1. web.archive.org/web/20030927011427/http://www.najad.se:80/yach/spec/pdf/ts4002003.pdf
  2. web.archive.org/web/20040717051152/http://www.najad.se:80/yach/spec/pdf/400brochure.pdf
  3. web.archive.org/web/20031203145923/http://www.najad.se:80/najad_news/najadmagazine/najad4…
  4. web.archive.org/web/20060109090518/http://www.najad.com:80/grafik/400_techn_spec.pdf
  5. web.archive.org/web/20050306000531/http://www.najad.com:80/najad_yach_400_specs.asp
  6. web.archive.org/web/20131206183136/http://www.najad.se/sailing-yachts/previous-models/400/
  7. web.archive.org/web/20101229014023/http://www.najad.se/pages/najad-400-nostalgia
  8. ronstan.com/products/winches/andersen-winches/winch-service-kits.html
  9. web.archive.org/web/20240623181022/https://najad.se/wp-content/uploads/2018/04/400.pdf
  10. web.archive.org/web/20040610004916/http://www.najad.com:80/najad_yach_400.asp
  11. najad.se/
  12. web.archive.org/web/20240623212721/https://najad.se/wp-content/uploads/2018/04/405.pdf
  13. web.archive.org/web/20131206184030/http://www.najad.se/sailing-yachts/previous-models/405/
  14. web.archive.org/web/20101229014103/http://www.najad.se/pages/najad-405-nostalgia
  15. web.archive.org/web/20060115072808/http://www.najad.com:80/najad_yach_405_specs.asp
  16. najad.se/contact/
  17. najadclub.nl/najad-scheepstypes
  18. najadklubben.org/vara-batar/

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