Boat Features

Manufacturer: Discovery

Year: 2004

Hull Material: Fiberglass

Nominal Length: 54.75

Length At Water Line: 44.75

Length Overall: 55.75

Length Of Deck: 54.75


The Discovery 55 is the ultimate world-class cruising yacht - strong, safe, fast and beautifully balanced. She is a thoroughbred from the board of the renowned yacht designer Ron Holland. Designed for effortless handling by just two people, she offers impressive performance and reliability. The Discovery 55 is a yacht that you can sail across oceans or soak up the peace and tranquillity at anchor in your favourite bay. She is a truly luxurious home to enjoy in different locations with family and friends.

Full engine overhaul completed 2018 - new pistons and liners fitted, new injectors, etc, etc. 

  • The cockpit, which is divided into two parts, is self-draining with large cockpit drains.
  • All drains have slotted stainless covers to prevent small items being lost overboard.
  • The forward part of the cockpit provides a spacious, comfortable seating area, with carefully sculptured seat bases and well angled, deep seat backs for maximum comfort and safety.
  • A substantial table, incorporating drinks stowage and glass holders, is mounted centrally for outdoor eating.
  • This incorporates a stainless steel grab handle and a central foot rail.
  • A pair of water-resistant cockpit speakers is fitted.
  • There is an instrument housing just forward of the main hatch.
  • The side benches extend through to the aft cockpit to provide maximum seating and sunbathing space.
  • The cockpit seats and forward sole are finished in solid teak.
  • The aft part of the cockpit is designed to give the helmsman an uncluttered helming area.
  • The curved helm seat provides good forward visibility and comfort, whether the boat is heeled or upright.
  • The custom designed pedestal provides a clear instrument and control platform.
  • The leather-covered wheel is mounted on the pedestal, with instruments, controls and single lever throttle immediately to hand.
  • The side seats also provide a comfortable helm position.
  • The aft cockpit is normally self-draining.
  • However, this cockpit has the option of being filled with sea or fresh water to provide a bath, and the cockpit is shaped to allow two people to comfortably lie back and relax in this area.
  • There is cockpit lighting positioned on the underside of the boom for evening dining.

  • 6 x Fenders
  • 2 x 15m nylon mooring warps
  • 2 x 10m nylon mooring warps
  • 2 x Locking winch handles
  • 1 x Emergency tiller
  • 3 x Cowl vents for dorades
  • 1 x Emergency handle for in mast reefing
  • 1 x Bilge bump handle
  • 3 x fire extinguishers
  • 1 x Ensign staff
  • 1 x Boathook
  • 1 x 6 kg Propane gas bottle and regulator

I : 71.50 ft
J : 20.25 ft
P : 63.33 ft
E : 22.17 ft

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Interior Layout

  • This boat has the raised deck saloon, which provides panoramic views when seated.
  • The navigation area is to starboard and its at a higher level to maintain a good lookout.

Interior Finishes

  • The joinery finish is in  light oak.
  • Part of the main saloon and all the cabins are finished with a high quality carpet.
  • The rest of the main saloon and the galley sole are finished in teak and holly laminate flooring with a non-slip finish.

D.C. Electrics

  • The engine and generator are 12v start.
  • The main engine is fitted with a 55 amp hour 12v alternator.
  • Both the main engine and the generator have their own 120 amp hour start batteries.
  • A second 24v, 100 amp hour alternator on the engine supplies the yacht?s main 24v system.
  • The domestic batteries are industrial heavy duty, deep cycle, sealed gel batteries totalling 500 amp hour capacity at 24v. (Equivalent to 1000 amps at 12v).
  • They are completely maintenance free and are fully secured.
  • A 24v to 12v converter provides a 12v power source.
  • All wiring is tinned multi-strand marine grade cable, sized to ABS voltage loss regulations.
  • Heavy-duty battery switches isolate all circuits except bilge pumps which are independent.
  • All circuits are connected to circuit breakers on the main control panel.
  • All wiring is clearly labelled and numbered or colour coded throughout.
  • Wiring is fed in conduits wherever appropriate.
  • The control panel provides full power management information (both D.C. and A.C.).
  • All chain plates, skin fittings and mast are grounded to the ballast keel for lightning protection.
  • Sterngear, chainplates, seacocks and keel are electrically bonded and linked to the common earth system.

Battery Charging

  • Engine and generator start batteries are charged by their own alternators.
  • This provides secure starting back up with the two separate batteries.
  • These have an emergency link facility, which would also allow charging from either alternator.
  • The 24v domestic battery bank is charged by the 110 amp hour alternator on the engine or by the Victron Energy battery charger.
  • This charges at 70 amp hours (24v) from the generator or shore power.

A.C. Electrical System

  • An A.C. panel controls a 30 amp 230v (110v option) ring main, with power sockets in the galley, main saloon and cabins.
  • A.C. power can be provided by the standard Victron Energy 3kW static inverter, dockside supply, or standard diesel generator. (A second 3kW static inverter is available as an option).
  • A 1kW immersion heater is fitted in the hot water tank for use when using dockside supply or with the generator.
  • A 3 core Marinco double insulated 16 amp PVC dockside power cable (20 m) with appropriate sockets is provided.
  • Watermaker 90 litres per hour

  • The galley has been designed with both use at sea and in harbour in mind.
  • The double sink is set near the centreline of the boat, so that it can drain on either tack.
  • Since water from washing up and food preparation seems to have a mind of its own at sea, the whole of this inboard worktop is Corian with large Corian and cherry fiddles to contain any spillages, which can be wiped back into the sinks easily!
  • Hot and cold pressure water is fed to a mixer tap.
  • There is a separate foot-operated fresh water pump.
  • A saltwater tap is available as an option.
  • A large draining sink is built in beside the sinks, so that crockery can be left to dry securely.
  • This is also a useful place to put things down and know that they will be secure.
  • There is a handy chute leading to a pull-out garbage container under the worktop.
  • There is extensive stowage in lockers and drawers above and below the worktop and there are fiddles and grab handles throughout.
  • There is enough space for an optional front-loading dishwasher.
  • Halogen down lights provide good working light.
  • Two opening ports in the coachroof provide ventilation and light.
  • There is also a fixed port in the hull, an opening hatch overhead, and a good sized opening hatch into the cockpit, which allows food to be passed directly to the cockpit.
  • A 230v (110v) extractor fan is fitted over the cooker.
  • There is a Force 10 three or four burner gimballed cooker, with grill and oven set into a GRP moulded recess.
  • It is fitted with fiddles/pan holders and has flame failure devices.
  • A safety switch is provided to the remote gas supply solenoid shut off valve.
  • There is a stainless crash bar running in front of the cooker.
  • There are deep fiddles around the Corian finish worktop.
  • A 230v (110v) microwave oven is also fitted as standard.


  • The main fridge of 300 ltr (10.4 cu ft) capacity has a front opening door.
  • This is fitted with shelves and an internal light.
  • There is a large, well insulated deep freeze of 170 ltr (6.0 cu ft) capacity, fitted with baskets.
  • The fridge and freezer are positioned so that crew can reach cold drinks and snacks without disturbing the cook!
  • The freezer can also be used as a fridge should an extra chill cabinet be required.
  • The standard refrigeration and freezer are 24v Frigomatic systems, with sea-water keel cooled heat exchangers.
  • Both the fridge boxes and freezer are constructed with 75 mm to 120 mm closed cell insulation throughout, and vapour barriers are fitted round the doors.
  • Both fridge and freezer are specified for full tropical use.

Engine Room

  • The Discovery 55 has a full walk-in engine room, with the main access door from the Owners Stateroom Ensuite.
  • There is good access to the engine and to ancillary equipment.
  • There is good lighting and fan ventilation in the engine room area.
  • Two automatic fire extinguishers are fitted as standard.


  • The engine room is fully lined with fire retardant insulation that is faced to prevent any contamination by diesel or inflammable substances.
  • All access panels have rubber sealing strips.
  • All ancillary pumps and motors are rubber mounted for quietness.
  • Ventilation ducting is also sound-insulated where appropriate.


  • The engine is the YANMAR 4LHA-HTP.
  • This is a 4-cylinder, turbo charged engine, which develops 160HP (118kW) at 3,300 RPM.
  • Fitted with a 2.52:1 reduction gearbox, it is designed for smooth, long running operation.
  • It has excellent torque characteristics that allow it to power a large, slow turning propeller for quiet motoring.
  • The engine is fitted with dual alternators. (See electrical specification for more details).

Stern Gear

  • The engine is mounted on captive flexible feet to minimise vibration.
  • An Aquadrive coupling at the inboard end of the 38 mm (1.5?) stainless steel shaft then transfers the thrust to the hull via a thrust bearing.
  • This further reduces vibration, noise and wear.
  • The shaft is led to a cast bronze P-bracket.
  • An anode is fitted to the shaft.
  • A rope cutter is optional.


  • A folding three-bladed 24 inch diameter Gori propeller is fitted as standard.
  • The propeller folds automatically to maximise sailing performance.
  • It gives excellent handling performance, ahead or astern.


  • An ONAN low speed, heavy-duty generator of 7kW 50Hz [9kW at 60Hz] is fitted as standard.
  • This comes with its own insulated sound shield, and is located in its own space under the deck saloon for easy access.
  • This area is then fully sound insulated for near silent running.
  • The exhaust is fed to an HMI water separator, which eliminates almost all exhaust and cooling water noise.
  • A remote control panel includes automatic shut down facilities.
  • There is the option to upgrade to a higher output generator to support full air-conditioning, if specified.

Bow Thruster

  • A 10HP MaxPower tunnel bow thruster (24v) is fitted as standard.
  • The tunnel is fully faired into the hull.

Fuel Tanks

  • Fuel is provided from three rigid tanks made of special fuel grade highdensity polyethylene.
  • Total capacity of the tanks is 1,334 litres (352 US gals).
  • The tanks are fitted with baffles and inspection covers.
  • We have fitted these because we believe them to be far superior to stainless steel or aluminium tanks, as they minimise condensation and are much less likely to suffer from stress cracks.
  • They have the added advantages that they are lighter.
  • Each tank has its own deck filler and breather.
  • Each tank has a pick-up point at the very bottom to permit the removal of any water or contaminants.
  • The main fuel feed is then led to a Separ (or equivalent) fuel filter and water separator.
  • This has a warning light on the main panel.
  • This is in addition to the main engine and generators filters.
  • There are fuel contents gauges for all tanks.

Hull Construction

  • The hull is laid up in female moulds.
  • The immensely strong lay up specified by the Designer and Structural Engineers meets or exceeds full CE regulations Category A-Ocean and is constructed in a Lloyds Approved laminating facility.
  • The hull has two coats of isothalic gelcoat.
  • This is non-pigmented below the waterline.
  • This is followed by powder-bound mat.
  • Both the quality of the gelcoat and the use of non-pigmented gelcoat below the waterline make for an impervious hull surface that is highly resistant to osmosis.
  • Vinylester resin is used throughout the hull, which gives superior strength over more traditional polyester resins.
  • The lay-up incorporates an endgrain balsa core, which provides exceptional stiffness and insulation.
  • This is laid-up under vacuum to ensure complete structural integrity.
  • Woven mat is used extensively for optimum strength to weight ratio, and this is further stiffened by a layer of woven Kevlar throughout the forward part of the hull.
  • There are massive stringers running the full length of the boat to port and starboard.
  • These incorporate the engine beds and tank supports.
  • Structural bulkheads are of marine grade plywood laminated to the hull and deck.
  • There are two watertight bulkheads forward - one aft of the chain locker, and another between the main forward sail locker and the fore cabin.
  • An optional watertight bulkhead and door can also be provided by the mast to divide the boat into two main compartments.
  • All services passing forward of this bulkhead then pass through watertight glands or seals.
  • The aft lazarette lockers are contained in their own watertight compartments.
  • The two transom lockers are also self contained.
  • The hull below the waterline is epoxy painted and given two coats of anti-fouling before the boat is launched.
  • A double boot top line is sprayed or moulded in, and a caveta line is hand applied when the boat is sign written.

  • The deck is moulded in GRP with a balsa core to provide strength and insulation.
  • A bulwark runs around the whole deck edge to give strength and a feeling of security.
  • Wherever there are load bearing areas plywood replaces the balsa core.
  • All load bearing fittings have aluminium or stainless steel backing plates.
  • The deck incorporates 2 lockers in the transom steps, 2 lazarette lockers, a self-draining gas locker, a liferaft/fender locker amidships, a large sail locker forward, and a self-draining chain locker at the bow.
  • A fold out bathing ladder is built into the bottom transom step.
  • A useful grab handle is provided when coming alongside in a dinghy.
  • A bathing shower with hot and cold supply is standard.
  • The lazarette lockers are fitted with interior lights, and the sail locker with a gas strut and interior light.
  • All sidedecks, forward coachroof, cockpit seats, helmsman?s seat, forward cockpit sole and transom steps are teak laid, using finest quarter sawn teak, with no visible fastenings.
  • There is teak capping on the bulwarks.


  • Instruments by Raymarine.
  • ST60 boat speed, wind speed and direction, and depth systems.
  • Instruments are mounted in housing at the forward end of the cockpit.
  • A multi-function repeater is incorporated in the optional plotter.
  • Sailor Iridium Satellite phone at the chart table
  • ICOM SSB Radio at chart table
  • Sea Me Radar reflector


  • A Raymarine E120 GPS chartplotter is fitted at the chart table with antenna on the stern rail.
  • A Raymarine E80 is fitted at the helm position.
  • Raymarine radar
  • There is also a Raymarine RN 300 GPS at the chart table.


  • Raymarine 7001 + automatic pilot, with control at the steering pedestal.
  • A second handheld auto pilot control is fitted at the chart table.


  • Raymarine 240 E multi-channel VHF complete with DSC.
  • Cockpit speaker for VHF.
  • Masthead antenna.
  • Stereo Sony FM radio and CD player.
  • Twin speakers in the main saloon.
  • A pair of water resistant speakers in the cockpit.
  • Computer system for sending emails

Mast and Rig Options

  • The oval section Selden mast is keel stepped, with double swept back spreaders, which does away with the need for running backstays and forward facing lowers. The result clear, uncluttered decks and easy handling.
  • White finish anodised aluminium alloy.
  • The standard rig is electric in-mast reefing.
  • Push button control from the cockpit allows one person to reef and furl away the sail.
  • There is a manual over-ride of the electric motor.
  • The mast is fitted with internal halyards.
  • The standard headsail arrangement is a double headsail rig 
  • This has a roller reefing self-tacking blade jib (c. 90%) and roller reefing genoa (used just off the wind).
  • This is sometimes called a Solent Jib rig.
  • It has the advantage of having the ideal sail available for any condition.
  • It also lends itself to double headsail downwind sailing

Mast Electrics

  • The mast is fitted with a masthead VHF antenna and cable, masthead tricolour and anchor lights, steaming and deck lights.
  • Raymarine ST60 wind instruments.
  • Windex wind indicator.


  • The oval section Selden boom is designed for use with the electric inmast reefing.
  • A hydraulic boom vang 

Standing Rigging

  • All standing rigging is of 1 x 19 stainless steel wire terminating in Norseman Gibb or swaged terminals with chromed bronze rigging screws and stainless steel toggles at the lower ends.

Running Rigging

  • Main, Genoa and Staysail Halyards 12 mm Vectran
  • 2 Genoa Sheets 16 mm Polyester Braid
  • Staysail or Jib Sheet 14 mm Polyester Braid
  • Main Sheet 14 mm Polyester Braid
  • Outhaul 14 mm Dyneema or Spectra
  • Lazyjack Lines 25 mm Jackstay Webbing
  • Mainsheet Traveller Lines 10 mm Polyester Braid
  • Mainsail cut for in-mast reefing by Doyle
  • 2 off Furling crosscut Genoa in Dacron (140%) - with luff pad and UV protective strip by Hood
  • Furling crosscut Blade Jib in Dacron (90%) - with luff pad and UV protective strip by Hood
  • Storm Jib by Hood

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