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52' Seahorse Mandarin-52 2009

$ 350,000

is a Seahorse 52' Mandarin-52 currently listed for sale on the market. While this boat is not currently listed with United Yacht Sales, our team is happy to work on your behalf in the research and potential sale of the vessel. Our commitment to our clients is to find the best yacht available that fits the their needs, no matter where its listed. United is a professional yacht brokerage firm that has experience listing and selling all types of Motorsailers and similar boats.

Unique Blue Water vessel – fully self-contained – can cruise to any location

All Weather pilot house – heated and air conditioned

Full keel design w/protected running gear

Large cockpit and aft deck with convenient swim platform

Air Conditioning – Heat – Bow Thruster – Water maker

Extra capacity refrigerator/freezers

Simple Sail Plan

Large Master stateroom w/queen centerline berth

Additional double stateroom plus separate office

Two Heads w/showers

This is an ideal live aboard or long-term cruising vessel. She was designed and built by one of the most reputable builders of serious blue water vessels, who are still building boats today. 

See FULL SPECS for extensive equipment list and more details

Contact listing broker to discuss further

United Yacht Sales is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Denison Yachting. It is offered as a convenience by this broker/dealer to its clients and is not intended to convey direct representation of a particular vessel


  • Price USD:$ 350,000
  • Price CAD:$ 469,131
  • Price GBP:£ 275,222
  • Price EUR:€ 313,566
  • Builder: Seahorse
  • Model: Mandarin-52
  • Location: Simpson Bay, Saint Martin
  • Type: Sail
  • LOA: 52 ft 0 in
  • Display Length: 52 ft
  • Beam: 15'
  • Category: Motorsailers
  • Water Capacity: 350 gals
  • Fuel Capacity: 715 gals
  • Engine Details: Iveco
  • Engine 1: HRS 210.00 HP
  • Engine Fuel: Diesel

LOA ……………..       52 ft ……….   15.85 meter

LWL …………….        46 ft 2 in…   14.1 meters

BEAM ………….        15 ft …….      4.57 meters

DRAFT …………        5 ft 2 in ….   1.6 meters

DISPLACEMENT …44,000 lbs..  19,958 kilo

BALLAST …………..  7,000 lbs … 3,175 kilo

BRIDGE CLEARANCE .62 ft         

TANKAGE:      Fuel …….    (3) total  715 gal ………     2706 litr

                          Water….    (2) total 350 gal ………      1325 ltr

                          Holding.. (2)  total  80 gal ………      303 ltr

Engine …………        Iveco NEF67 210 JHP diesel (1422 hours)

Generator -----       Northern Lights 9 kw (746 hours)

Wind Generator ..D400 Wind generator

Solar ,……..             2x 135-watt KYOCERA solar panels

Vessel has (3) private cabins, and (2) heads.  One of the cabins is used as an office.  Forward are 2 berths (V-berth cabin), Aft is a large owners suite with queen berth

Vessel is entered from wide swim platform to full beam aft deck.  From here it is easy access to the cockpit through cutouts in the coaming.

A wide doorway opens from the cockpit into the Pilothouse, which contains a dinette, chart table and helm.  There is a 360-degree view from the pilothouse which lends to a bright and airy feel as well as excellent site lines to all sides for the helmsman.

A curved stairway leads down from the pilothouse to the lower Salon which contains a second inside dinette, with curved seating, galley, and extensive storage cabinetry

Forward of the Salon is a private cabin with V-berths, and lots of storage.  There is a watertight bulkhead between the salon and forward cabin with a proper watertight door.

Amidships is the engine room with excellent access and room within.

Also amidships is the office, and aft of the Salon is the large owner’s suite with centerline queen berth.


Entire vessel is finished in rich woods with opening hatches and ports throughout for ventilation.

Construction specifications dictated headroom at 6”3 throughout (much more in Salon).

Workshop/Engine room with all mechanicals and workshop with natural light and ventilation provides standing room and management of the systems. Interior is teak finish with multi-coat satin glass varnish finish. Solid Teak cabinets doors, wardrobes, handrails, drawers, etc. throughout. All doors are louvered for ventilation. All sole plates latch down. Teak and holly floors in accommodation areas. Galley with teak cabinets and trim, lots of counter space.

Granite countertops in galley and both heads Deep foam cushions with high quality fabric coverings. White foam Vinyl acoustical headliner

Fiberglass planking hull side liner in galley, salon, and MSR. Hull ports are opening type with insect screens and Stainless-Steel Storm hinged storm covers. Lots of hand and grab rails.

HEADS: Each head includes toilet, shower, basin and storage. Aft head has full size tub. Electric toilets with holding tank and overboard or deck drain. Each head has port and power ventilation on timer switches. Mirrors are fitted in heads as well as forward sleeping cabin.

Granite countertops in both heads

Galley sink an oversized single basin with faucet including spray hose. LPG stove w/oven and broiler with sea rails, and twin 24v refrigerators. Galley over 8’ long and designed for both form and function. Lots of storage in galley, under soles and in workshop.

Galley has teak cabinets and trim, lots of counter space.

Full chef’s galley with 2x24v fridge/freezers, large deep single sink and LPG 4 burner stove with oven and broiler

Large 3-plate deep freeze installed with 24-volt compressor

Granite countertops in galley


Separate heavy-duty engine, gen-set and house batteries connected by vapor proof master switches. Standard house batteries are four 8D 200 AH AGM deep cycle type, 400+AH total at 24V.

Electrical Shore Power Input:

120V [US120-30A], 220V (2P) [US250-50A], or 240V (1P) [EU 240-64A]

Electrical Output Circuits on board:

  • 24v, 12v, 120V, 220V (1P), 220V (2P) converted and distributed via transformers and inverters onboard giving maximum flexibility in dockside input.  12KW Toroidal isolation transformer





  • RAYMARINE (8") C80 color 4KW radar (mast mounted), plotter, GPS, DM300 sounder, video, MOB Tags [at helm]
  • RAYMARINE (7”) C70 color 2KW radar (Aft post mounted), plotter, GPS, AIS [at pilothouse map table] (Independent and redundant system)
  • RAYMARINE ST60 Tri-Data
  • ICOM 602 VHF with hailer and masthead VHF antenna 
  • ICOM 802 SSB with AT140 tuner and Shakespeare 23' SSB antennas 
  • IRIDIUM 9505 satellite telephone wiith external  marine antenna
  • 2x COMNAV Commander (Mono display) autopilots with redundant independent SPUs, Fluxgate compasses, and reversing pumps


MUIR electric anchor windlass with 70LB ULTRA anchor and 350’ ACCO 3/8" hi-test (G4) chain rode

SIDE-POWER 24-volt Electric Bow thruster

9KW NORTHERN LIGHTS Genset with sound shield; 

WEBASTO diesel heating system, five outlets; 

2x 16,000 BTU A/C with heat option (Salon/Pilothouse & MSR)

VILLAGE MARINE 220V 800gpd custom water maker


Two water tanks, approximately 350 gallons total,

Fresh water system uses copper tubing,

Activated carbon water filters (SEAGULL IV and GE) at galley tap. Stainless ball type sea-cocks on all thru hulls below the waterline. Hot water heater with 220V electric and engine heat exchanger High quality bath and galley fixtures.

Shore water attachment with regulator installed.

HULL LIGHTING AND VENTILATION: Eleven opening hull ports with insect screens and storm covers.

Eight opening LEWMAR Ocean deck hatches. Eight non-opening windows in hull plus pilothouse windows (10mm glass forward and side, 8mm aft.

Storm door (keyed) at main entrance from cockpit to pilothouse Three deck prisms. Natural and forced ventilation in hull for comfort when conditions dictate a closed boat.

DECK: Solid stainless pulpits and tubing hand rail (not wire) fully grounded

Stainless-steel heavy-duty cleats and chocks, not chrome bronze. Handrails and cast deck gear 316 stainless. Boarding gates port, starboard with fold down boarding ladders.

Bow pulpit with dual rollers. Heavy duty double anchor chute with bronze rollers. MUIR electric anchor windlass with 70LB ULTRA anchor and 350’ ACCO 3/8" hi-test (G4) chain rode. Deck and helm switches for up and down operation; digital chain counter at helm.

The Mandarin 52 is one of the world's only blue water cruising yachts which will also navigate most of the European and U.S. canal systems. A deep sided and safe cockpit, fully scuppered with a sun and rain shade at pilothouse door. Ten deck and stern platform storage boxes with scuppered secure covers. Two dedicated to line and sheet storage, very important on a motorsailer. Shower fixture installed at transom, hot and cold water. Strong LEWMAR Ocean hatches in deck and pilothouse. Each cabin has an escape hatch. Stainless steel ports in hull with strong tempered glass. Eleven total. Faux Teak cockpit seats using an epoxy bedding system for ease of maintenance. Molded-in non-skid pattern on deck. Three deck prisms.


Pilothouse is fully scuppered with storm board companion way hatch to main saloon for extra safety. Engine controls and steering in pilothouse. Marine circuit breakers for all boat operations and for electronics installed in the pilothouse. Safety monitor panel to give visual and audio indication of the status of all the systems in the vessel. Basically allows the person on watch to know everything that is happening in the boat with instant fault warnings. Audio warnings for high bilge water, engine raw water flow, high engine room temperature, water leaks at the intake trunk area (covers engine room intakes, all water filters, fresh and raw water pumps, engine exhaust and water heater). Visual indication of any electric pump running: audio pump overrun alarm if any pump runs over one minute (can be adjusted up to three minutes). Audio alarms can only be defeated by a key switch. Teak helm wheel. Pantograph windshield wipers with fresh water wash. Forward windshields are heavy 10mm safety glass and slanted pilothouse design reduces water pressure on glass and boat structure in a serious green water situation. RICHIE navigation compass.



Sun Awnings (2017)

A deep sided and safe cockpit, fully scuppered with a sun and rain shade at pilothouse door

Storm door (keyed) at main entrance from cockpit to pilothouse

Stern platform designed as an "open cockpit" with rails, steps to back deck and storage boxes which can be used for seats when underway. The aft gate folds down to become a boarding ladder. A great place for fun and fishing. A dinghy outboard can be easily stored in one of the aft platform storage boxes.

  • MAST AND SAILS: Standard mast includes double spreaders and double backstays with furling main, Genoa  optional staysail. There is no boom and the furling main is sheeted to an athwartship spreader bar with full beam HARKEN traveler mounted between the double back backstaysstays. A simple and safe proven system. Full walk around aft deck without interference from stays. (In boom furling optional) Stainless steel rigging with high quality turnbuckles, 10MM" upper shrouds and fwd and back stays. Roller furling/Reefing behind the mast main and 120%  & 140-% furling genoas included. Staysail with staysail stay, halyard winch, halyard and furling installed. Deck and sail handling gear to be appropriately sized for blue water cruising. Three large Harken winches for main and genoa, 6 additional Harken winches. Heavy duty genoa sheet turning blocks which can be used when towing warps. 140% ELLIOT-PATTERSON (2014) and 120% DOYLE (2018) roller furling genoa Foersale. 
  • Mainsail with convenient and reliable electric HARKEN furler and reefing using athwartships boom system, includes a large self-tailing sheet winch; 


Standing rigging replaced 2016 with Hayn fittings

WINCHES; Five (5) Harken winches on the cockpit, the largest three aft are all electric.  The aft center is the main sheet, the two other aft power winches are used with the foresail (usually the Genoa), then there are two more manual winches on the cockpit for the staysail.   There are four more smaller winches on the mast for halyards and such, for a total of 9 winches

  • 210 HP IVECO Marine Diesel (Cummins B-Block Family)
  • Flexible motor mounts with flex shaft and thrust bearing
  • 12KW Toroidal isolation transformer
  • Custom WALBRO/RACOR fuel polishing/transfer/priming system
  • MUIR Electric 24-volt windlass with 350" 3/8" G4 chain
  • Three anchors: ULTRA 70lb with ULTRA Swivel, Galvanized Plow, and FORTRESS. 
  • 140% ELLIOT-PATTERSON (2014) and 120% DOYLE (2018) roller furling genoa Foresail. 
  • Mainsail with convenient and reliable electric HARKEN furler and reefing using athwartships boom system includes a large self-tailing sheet winch; 
  • 9 HARKEN winches, self-tailing where appropriate (three electric winches)
  • 5-Blade MAXPROP 32” Whisper Folding Propeller, fully tuned and adjusted.
  • VHF Antenna, anchor light and strobe, and grounded lighting rod at masthead Deck design includes good fresh air ventilation and 8 deck  lockers, plus cockpit insulated drinks locker with 24v NOVACOLD compressor and cold plate;
  • Deck wash pump (salt water) with spigots at both bow and stern and second hose at bow for anchor washdown
  • Heavy duty rub rail on hull with stainless cap
  • Heavy duty 24-volt engine alternator 
  • 3000-watt 24-volt VICTRON inverter/charger with remote control panel and  460 AH, 24-volt AGM house battery bank (4x8D); 
  • FLOW-SCAN engine fuel use meter with totalizer, LPH or GPH; 
  • HART Tank-tender pneumatic tank gauge with purge-valve
  • 3 Pantograph windscreen wipers
  • Heavy duty (2xBA-200-9) hydraulic steering rams and pumps configured as two independent/redundant systems will custom manifold in mechanical  workroom for easy changeover
  • Full chef’s galley with 2x24v fridge/freezers, large deep single sink and LPG 4 burner stove with oven and broiler
  • Large 3-plate deep freeze installed with 24-volt compressor
  • Hot and cold fresh water shower fixture on swim platform;
  • Four 50’ dock lines  and two 25’ spring lines of 1-inch multibraid nylon
  • RICHIE navigation compass
  • Electric heads, 2x TECMA Silent flush
  • Deck gear and hand rails  all 316-quality stainless
  • Custom Stainless/Fiberglass hardtop for cockpit with hatches and MARKELON forward enclosure
  • Deck to hull joint double bonded inside and out with UDR
  • Fire resistant resin used in fuel tanks with Isophalic  double mat inside liner; Vinylester resin first bottom laminate and double epoxy seal for blister protection
  • Quality anti-fouling paint applied regularly (last February 2019)
  • Clear, not colored, gelcoat used in hull sides or bottom; 
  • LPU finish, in Oyster White with Burgundy trim 
  • SIDE-POWER 24-volt Electric Bow thruster with Joystick and thumb-switch on the throttle for easy close maneuvering
  • 9KW NORTHERN LIGHTS Genset with sound shield; 
  • WEBASTO diesel heating system, five outlets; 
  • 2x 16,000 BTU A/C with heat option (Salon/Pilothouse & MSR)
  • 24-volt VICTRON inverter/charger; 
  • BALMAR High output 24-volt second  alternator on engine  with multio-stage  regulator; 
  • FLOSCAN Cruise master fuel use meter with totalizer; 
  • 2x 135-watt KYOCERA solar panels with MORNINGSTAR regulator and remote panel
  • D400 Wind generator with independent regulator integrated into electrical system
  • VILLAGE MARINE 220V 800gpd custom watermaker, with remote panel
  • BOSCH Washer and Dryer (separate units-Axxis models)
  • PYLE automotive stereo with 6 high quality speakers; 
  • Built-in large deep freezer box, 5" insulation, with NOVACOOL 24v 3-plate system. 
  • Four-burner LPG stove, solenoid shutoff with twin sensor leak monitor; 
  • SHAKESPERE TV and Stereo antenna with booster and dock cable inlet; 
  • JABASCO remote control spot lightfor security; 
  • Ships safes
  • integrated RAYMARINE cameras aft and in engine compartment viewable on helm E80 system
  • REVERSO Oil Change system hard-plumbed to the Main, Genset, and Transmission for easy oil change from within the Engine Room

Interior layout custom changes and special woods and colors;  Complete set of hatch covers, winch covers, and house and deck shade/awnings and canvas work

Cockpit and pilothouse upholstery new (2017) with SUNBRELLA fabrics

Vessel painted with LPU.

ENGINE: IVECO NEF97-MMN28.1 210 HP 6-cylinder turbo diesel with TWINDISC marine transmission. Complete engine instrumentation including high temperature, low oil pressure, and cooling water flow alarm. Special soft engine mounts with engine mounting separate from the vessel's main stringers to nsure vibration isolation. Two inch stainless shaft connected to a thrust bearing and then to the engine through a splined universal joint drive shaft. Sea chest with strainer and stainless ball type sea-cocks on all inlets. Primary and secondary fuel filters. Drip pan under engine with oil trap overflow. Bronze underwater gear except for stainless shaft. 5-Blade MAXPROP 32” Whisper Folding Propeller, fully tuned and adjusted.

OEM Four bladed propeller properly balanced and sized to selected engine as spare. Custom designed water-cooled muffler with relieved underwater exhaust. Dual, large capacity engine room blowers with noise isolated vents. FRP fuel tanks well baffled and braced. Stainless steel ball valves at each end of fuel lines. Large cruise tanks double vented with 2", not 1 1/2", deck fills for easy filling. FRP fuel tanks enclosed in 18mm plywood saddles. Thick side and baffle construction is double lined with 1 1/2oz mat using isophalic resin. 284 gallon cruise tanks, P&S; 145 gallon operations tank in keel. Special acoustical insulation surrounding engine room.

  • Back lighted custom-made circuit breaker panels using high quality breakers
  • AC/DC system designed to receive most US and European electrical inputs (120V-1P, 250V-50A-2P [US 240], 250V-32/64A-1P [EU 240]).  Includes all adapter plugs
  • Breaker panels put electrical controls where needed.Master breakers are GFI (RCB) type for safety at
    • An operation panel is located in the pilothouse (described in pilothouse section of these specifications);
    • the house panel is located in the main salon near the engine room door.
  • input.
  • 24-volt interior lighting; IMTRA LED lighting fixtures. Lots of indirect lighting to minimize the "workshop" lighting style found on most cruising boats.
  • All Seahorse Marine installed wiring is multi-strand tinned copper boat cable. Wires have color or marker codes for easy tracing. AC wiring is sized to the more demanding 110-volt requirements on boats built for 220-volt systems to maximize conductivity, service and longevity.
  • Wire runs in conduit and all runs, except the bilge pumps, are located as far above the waterline as possible. All wire runs including those along the shear are easily accessible.
  • AC shore connector (250-50A) fitted to starboard side of pilothouse.
  • AC receptacles throughout, 14 total.
  • DC sockets installed in cockpit and pilothouse, USB sockets in MSR P&S.
  • Copper bonding strip installed the length of the keel to four zincs at the stern.
  • All chain plates and through hulls wired to bonding strip and keel castings.
  • International navigation lights and mast mounted deck lighting installed.
  • Security flood lighting; Red interior night safety lighting and stern platform courtesy lighting installed.
  • Pilothouse overhead lights have red and white bulbs. Strobe, tri-color and anchor light at mast head. Optional electronic and entertainment equipment can be planned in advance with owner so necessary wiring, grounds and cabinets can be built in. A counterpoise reflector for SSB can be molded into the deck lay-up to the owner's designed. VHF antenna at mast head 
  • Two water tanks, approximately 350 gallons total, with ball-cock shut off valves and vents designed to prevent salt water contamination. Water tanks coated with epoxy certified for potable water use. A 50' hose fed by raw water pump is located in a cockpit locker and a second hose is at Bow  for anchor wash. Fresh water system uses copper tubing, not plastic. Fresh and raw water pumps can easily be interchanged in case of failure. Activated carbon water filters (SEAGULL IV and GE) at galley tap. Stainless ball type sea-cocks on all thru-hulls  below the waterline. Double all stainless clamps on all hoses below the waterline. Hot water heater with 220V electric and engine heat exchanger for domestic water supply. High quality  bath and galley fixtures. Shore water attachment with regulator installed.


  • BILGE PUMP: Three bilge pumps total, warning light and audio overrun alarm on all electric pumps, including fresh and raw water. Two automatic electric bilge pumps, minimum 3000 gallons per hour each. Large Titan diaphragm manual bilge pump installed. Bilge water led to small sump fwd aft which epoxy coated to protect hull laminate. Second electric bilge pump as high-water backup.

This custom-built MANDARIN 52 MOTORSAILER was specified by construction drawings approved by Seahorse Marine and reviewed by both the current/commissioning owners and an external Navel Surveyor multiple times during construction.  She has a modified Chef’s Galley within the salon rather than in the companionway as per the standard Mandarin 52 configuration. Redundancy on major systems (electronics, autopilots) incorporated at design stage. 

CONSTRUCTION SPECIFICS: Clear gelcoat was used below the water line and the first mat layer is installed resin rich using vinylester resin for blister control. Bottom sealed with double epoxy seal. Deck and topside lay-up include outside laminates. 3/4" balsa core for stiffness and temperature insulation and mat with double roving inside laminate. Overlapping and interlaced double lapping at stem and keel and UDR reinforcements at chainplates and stringer caps for extra strength. Bottom solid lay-up varies from 5/8" to 1 1/2". Quality bottom paint has been maintained -. Hand roller used for proper resin/glass ratio and to minimize air encapsulation. Hull to deck joint bedded in epoxy, bolted and double bonded inside and out with UDR. Interior construction to allow easy access to hull to deck joint. Four large FRP hull stringers. UDR reinforced and built high enough to act as saddles for sole plates. All interior furniture heavily glass taped to hull for additional reinforcement. All plywood WBP grade or higher. Exterior teak brightwork limited to cockpit edge. Caprail has stainless trim. Heavy duty hull rub rail with polished stainless cap. Vessel painted with LPU.

Recently bottom painted – February 2019 – Seahawk Islands 44

Standing rigging replaced 2016 with Hayn fittings

Owners personal effects

Tender and outboard