Description Malmok


Pictures in this description might slightly differ from Malmok, because they are made by Najad on another Najad 520 DS yacht.


Type:              Najad 520 DS

Design:          Carl Beyer and Pieter Beeldsnijder


Dimensions and data

Length hull                              15,80   m

Length waterline                     13.55   m

Beam                                     4,60     m

Draught                                  2,20     m

Displacement                         24.000 kg

Lead keel                                6.800   kg

Mast height above waterline  22,10   m

Total transportation height     4,90     m


Launched                               18th of December 1998

Buildingnumber                      26


Germanischer Lloyd certificate number 26202

GL – 100 A5   

CE Boat Design Category A – Ocean


See also:



The hull is built in a sandwich construction of multiaxial glass fibre reinforced ISO polyester. The hull is extra shielded with Twaron (with guarantee certificate). The surface layer is of NGA gelcoat for maximum protection against water penetration. A core of balsa for strength and insulation. At the stern there is an integral swimming platform with a bathing and safety ladder. The bilge is reinforced with a longitudinal and transverse floor plate construction. This supports keel fittings, mast, engineframe, tank and cabin soles. Additional reinforcements longitudinal in the hull as stringers. All main bulkheads are laminated and bolted on both sides to the hull. Transverse chain plate fittings laminated to the hull. The rubbing strake colour is white with carmine red trim line and water lines laid in the gelcoat. Below the waterline the hull is treated with epoxy primer and antifouling paint. The hull is topcoated internally. Extra watertight bulkhead between cargo hold and forward cabins. Stainless steel through hull exhaust fittings for engine and generator. Earthplate 3 sqm equivalent stern portside.



The entire keel is built by NACA profiles. The lead keel is bolted on with 14 x 20 mm acid resistant stainless steel bolts. A small wing at the bottom of the keel reduces the water flow beneath the keel, which results in less drag.


Rudder and Steering

Rudder and skeg in NACA profile. Semi-balanced rudder in glass fibre reinforced polyester with 60 nm acid resistant stainless steel rudder post. Rudder fitting in stainless steel, bolted to the skeg. Steering pedestral (by solimar) in glass fibre reinforced polyester with leather covered stainless steel wheel of diameter 1200 mm. Compass and top-fitted single lever control for the engine and engine board. Friction brake on the wheel. Stainless steel chain and wire cable to a large quadrant. Rudder post scaled with greased stuffing box. Emergency steering on rudder post by tiller.



Fresh water tanks in acid resistant stainless steel installed between floor plate construction to port and starboard sides. The tanks are fitted with inspection hatches. Fuel tanks in stainless steel installed between floor plate construction amidships inclusive lever gauge. Suction pipe with manual pump to the tank bottom for evacuation of dirt and condensation. Each tank has its own electric fuel pump. Holding tank in acid resistant stainless steel installed in engine room. Manual pump in the toilet compartment for drainage via through hull fitting. Connected to deck fitting for evacuation ashore. All hoses to the tank are gas tight.


Volume of tanks

Fuel capacity:                         1.190   liter in 4 stainless steel tanks

Fuel Dickinson heater:              120   liter

Water capacity:                         690   liter in 2 stainless steel tanks

Sump tank:                                100   liter


Through hull fittings

All through hull fittings below the waterline are fitted with seacocks. The reinforced hoses have twin clips in acid resistant stainless steel.



Volvo Penta TAMD 41H-A (145 HP, 106 kW). Centra gearbox, flexible shaft coupling, indirect cooling system. TFX – EC single lever control system for governing the throttle and gear function. One lever outside on steering pedestal, one lever inside the deckhouse at charttable-position. Double fuelfilters with waterseperator, Debug magnetic fuelfilter, 24 volt a.c. 100 ampere alternator, Max Prop 3-blade propellor, spere propellor 3-blade fixed type, Ropecutter AM 15 on longer propeller shaft. Instrument panel installed in the pedestal. Electrical starter motor, 2.5 kW (3.5 HP), electrical stop. The engine is suspended in four rubber mounts for effective vibration damping. Wet exhaust pipe with swan neck and affective rubber silencer. Well sound insulated engine room. The engine is easily accessible for servicing through a hatch in the saloon floor.



Whisper 6000 (Westerbeke) 6 kW 1500 rev/min. (in soundpack).


Deck fittings

2 Andersen stainless steel 68 ST E (electric) genua winches 2 speed. 1 Andersen stainless steel 46 STE (electric) mail halyard winch near mastfoot. 2 Andersen stainless steel 46 ST cutterjib/backstay winches. 1 Andersen stainless steel 46 ST main sheet winch. Stainless steel ropepipe for mainsheet through GRP sprayhoodfundation. 2 stainless steel cleats near ST 46 cutterjib winches. Al mooring cleats stainless steel. Brass protection strips at cleat positions. CQR anchor, 35 kg, in stainless steel double anchorroller system. Pulpit, pushpit and stanchions 75 cm high, with 3 s.s. wires. Pulpit closed with round teak seat. Pushpit with integrated teak seats. 4 special gateway stanchions. 6 gatewayopening-lifelines with 6 pelican hooks. 2 wichard eyes for backstays. 4 eyes for lifelines in cockpit. 4 meter long genua tracks and 2 variable adjustable sheet blocks. 7 insulated tinted windows in the deck saloon. 7 deck hatches. Lewmar Ocean on deck. 10 stainless steel portholes in the hull side. 3 dorade deck ventilators with stainless steel protection bars. 2 stainless steel grap rails on decksaloon roof. Deck fillers for water and fuel and for evacuation of the holding tank. International approved navigation lights. Illuminated Suunto compass. Several fittings for lifelines. Spinnaker gear and backstays on deck. Scanstrut radarpole with satellite phone antennebracket on aftdeck. Lewmar stainless steel chain stopper. Bracket for Ampair water/wind generator integrated in pushpit. Removable windgenerator stainless steel mast and aftdeckfitting. 2 special 6 kg GRP gasbottle containers mounted flush in foredeck. 1 special Lewmar hatch in fordeck to forward hold, with aluminium handles. Electric anchor windlass Lewmar Ocean 2/2000 W, 24 V, including 60 m 12 mm HT chain. Shower in cockpit sb, 3 mtr showehose. Seawater deckwash connection in anchorlocker. Anchrolina sternanchor nylonline system, 2nd anchor and chain. Lead anchorline.


Deck and superstructure

Deck and coachroof are built in sandwich construction with multiaxial glass fibre reinforced polyester with balsa as spacing material for strength and insulation. The colour is white. Hull and deck ar bolted together. Strengthened glass fibre laminate beneath stressed areas. The deck, coachroof and swimming platform are laid with solid caulked teak. Screwed with acid resistant stainless steel screws, laid in silicon to the GRP deck. Five large self-draining lockers for anchor chain, warps, fenders and gaz bottles (2 spare bottles in gazette) and one large waterproof lazarette in the aft deck. One large cargo-hold in foredeck. Cockpit drains 50 mm. Deckdrains 32 mm. Epirb Kanad 406 WH system on roof of deckhouse. On pushpit inflatable liferaft for 6 persons in a bag. Removable footbar in cockpitfloor. Electrical connection for Ampair generator in cockpit.


Electrical system

24 volt 600 gel batteries (6 batteries 200 AH). 3 x 12 volt converters Mobitronic for instrumentation, 1 spare converter. Mastervolt Mass Sine inverter 24 – 220 volt, 3.000 watt transformator with softstart. 4 MCC controlpanel, crossfeedsystem between startbatteries. 220 volt connection between invertor – shore and generator. 24 volt 100 ampere batterycharger (shore power). 1 x 140 engine startbattery. 1 x 105 generator startbattery. Heavy copper earthing for SSB. Extra dimentioned cable conduct pipes. 4 main switches. 1 complete “dead ship” switch.


Bowthruster installation

Sleipner 10 HP Twin bowthruster.

Joystick control on steering pedestral.



Sea Recovery reverse osmosis SRC 170 CS-FE/24VDC.

28 litres per hour.


Mast and rig

Masthead rigged with three pairs of spreaders and twin lower shrouds. Selden mast in silver anodised aluminium stepped on deck. Headsail and cuttersail furling by Selden. Navtec hydrolic backstay adjusters with control in cockpit. Running backstay tackle and stopper. 19-ply stainless steel wire standing rigging. 12 mm fore stay, cap shrouds and lower shrouds. 10 mm double backstay, inner forestay (cutterstay) and intermediate shrouds. 8 mm running backstays. Selden rodkick no. 20 with gas damper and leather protections. Stainless steel rigging screws. Rigging screw protection in aluminium. Stainless steel chain plates, bolted to transverse bulkheads, bonded to the hull sides. The mast is fitted with deck light, steaming light, internationally approved signal horn, and prepared for spinnaker equipment. Two selftailing stainless steel halyard winches Andersen 46 ST, winch handle pocket on the mast, two Andersen 12 ST winches, windex and flag halyards. Rope to wire main, jib and inner forestay halyards. Topping lift in Terylene. Ample cleats. 2 stalock swageless isolators in port backstay, RCB track system Selden, lazy jack system, 4 reefs in boom, tri-color light and anchor light, spinnakerpole in mast, incl. Topping lift, 2nd spinnakerpole mounted on deck, 3 spinlock XT on mast, 4 maststeps, 2 jockey-pole fittings for 2nd spinnakerpole, Delta RR antenna type Pacific on masttop. Selden boom in silver anodised aluminium with internal outhaul and double reefing lines with stoppers. Main sheet to one winch through a ball bearing car and adjustable sheet point.



Full batten main 614 square feet, 57,0 square meter. Hydranet 480 gram, 4 reefs.

Furling working jib 110%, 54,0 square meter. DC 99/77/66. Triradial.

Furling genua 140%. 75 square meter. DC 99/77/66. Triradial. Furlex 12 D system.

Furling cutterjib. 30 square meter. DC 99/77/66. Triradial. Furlex 10 C system.

Anchor sail crosscut 7 square meter. Dacron 420 orange.

Covers for Main, Furlex genua and Furlex cutterjib.



Spacious cockpit with large navigation table and sliding hatch in teak below fixed windscreen. Seats covered with seamed untreated teak. Helmsman’s seat behind the wheel with inlaid Najad logo. Seamed teak on the sole. Removable cockpit table, sunshade tent, sprayhood and cockpit cover. Steering pedestral with wheel. Hatch at the port seat as emergency exit. Instruments over the companionway. Manual bilge pump operated from the cockpit. Electrical bilge pump with both automatic and manual switch.



The interior is designed by Pieter Beeldsnijder and handcrafted in selected and unstained African mahogany, hand polished and varnished to a satin finish. Cupboards and doors in solid mahogany with profile milled frames. All doors with locking device. Uphostery in extra quality, colour number 9700. Flooring of varnished teak and holly plywood. Removable hatches for the bilge and tank gauges. Headlining of white vinyl covered panels with mahogany strips. 2 Eberspracher D5L heating systems with blowers in every compartment. 12 electric 220V outlets. 3 bilge pump electric / manual. 3 fire extinguishers and 1 fire blanket are easy accessible.



The floor in the decksaloon is three steps above the main floor level on board. The deck saloon has a low aspect, designed to harmonize with the overall design of the yacht. Nevertheless the headroom is 1,96 meter. The rounded saloon sofa to the portside of the saloon has been raised to give full panoramic views through the windows even when sitting at the table. The table also has an integrated bar. A large charttable with ample chart stowage and a map reading lamp is installed on the starboard side. Also within the “navigarion area” there are many instruments installed. Stairways lead both forward and aft to gain access to all other accommodation. Grab rail on both sides of the companionway. Halogen light dimmer system. Sony CD and radio system with speakers in decksaloon and cockpit. TV and VHS video system.



Galley and dining saloon

The galley is located forward of the deck saloon to port side. U-formed with double extra deep sink. Large stowage and good working surfaces in white Corian. Pressure system with accumulator tank for hot and cold fresh water. Single lever mixing tap. 60 liter boiler (over engine and 220V). Electric seawater pump and tap, special tap for watermaker. Manual pump for cold water as spare. Twin gasburner with oven (half cardanic). Microwave Miele 3000W. Gas pipes with remote controlled shut-off valve between cooker and gas-bottles. Washing machine. Two well insulated ice boxes and one freezing box, 40 liter each, all with separate refrigeration units. Waste basket in corner. Porthole in hull side above cooker. To starboard side a separate dining corner with an U-sofa and table. Dickinson dieseloil heater with separated fuel tank integrated in kitchen area. Sony compact component audio system CD/MD/radio with 2 speakers.




Aft cabin with separate toilet and shower

Entrance through a door downstairs from the decksaloon. On portside a large double bed. Specially designed computerdesk with large seat. TV and video software on computer. Separate shower and toilet. Special design stainless steel bars in toilets. Six portholes in the hull sides and to the cockput. A hatch to the cockpit as emergency exit.





Forward cabins

On the portside there is a cabin with one berth and extra high cupboards. On the starboard side there are two berths above each other situated. Near the forward cabins there is separate toilet and shower facilities. Special design stainless steel bars in toilets.



Navigation equipment

Autohelm half hydraulic 24V autopilot ST 7000 with remote control on steering pedestral, working with ST 80 active compass tranducer. Whitlock electric direct drive 24 autopilot. Spare computer for both systems.


In cockpit: Autohelm ST 50 speed, depth, compass, wind, VMG, shipmate RS VHF dual installation, bracket + 12V connection for Magellan NAV DLX 10 GPS, Autohelm handheld remote control, 2 charttable lights, 12 volt connection plugs, searchlight.


In decksaloon at navigation desk: Autohelm ST 50 multi and wind, Autohelm joystick steering, Raytheon R40XX rasterscan radar, Navtex receiver K41, Magellan NAV DLX 10 GPS, Garmin 120 XL GPS, Yeoman Navigator Pro chartplotter, Autohelm ST 600R handheld remote control, Shipmate RS 8300 VHF dual installation, SSB prepared, laptop with fully integrated electronic navigation system.


In owners cabin: KVH sattelite Trackphone connected to desktop computer system with FTF 15” flatscreen, DVD and CD-writer, Lowe HF-150 SSB receiver. Spare compass Autohelm ST 50.             


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