RELENTLESS is hull No. 74 of the Outremer 51 model with the last hull/deck tooling iteration having evolved from the Outremer 49 and pre-2018 versions of this model. Construction was finished in August of 2020 in La Grande Motte, France. Due to Covid travel restrictions the owners took virtual delivery and RELENTLESS was stored until May of 2021 when it was sailed to Genoa and shipped to Newport, RI by Seven Star Yacht Transport ship. Summer was spent in New England then fall in Florida. RELENTLESS stayed at Just Catamarans in Dania from November through February of 2022 and was fitted with air conditioning and other upgrades. Spring of 2022 was spent in the Bahamas and summer found RELENTLESS back in New England. As winter approached, RELENTLESS headed south to Charleston and then to the Caribbean storing at Grenada Marine during 2023 hurricane season. January through May of 2024 RELENTLESS cruised the Grenadines and returned to storage at Grenada Marine until launching in January of 2026.
RELENTLESS has truly been a dream boat for us. We chose Outremer for its outstanding reputation, performance pedigree, and uncompromising build standards. Coming from a J80 race boat, we wanted a cruising catamaran that could truly sail—and Relentless has exceeded our expectations. She is easily handled by just the two of us in all conditions and consistently delivers fast, responsive sailing both upwind and downwind, often outpacing many other cruising boats, all from the comfort and protection of the helm.
When we purchased the boat, our priorities were performance, efficiency, simplicity, and safety—and Relentless delivers on all fronts.
For efficiency, in addition to the extra solar capacity we opted for the Integrel Generator system. This simple port-engine-mounted generator produces up to 5.5 kW while motoring and more than 6 kW when running at anchor. The system provides two major benefits: first, we eliminated propane entirely from the boat, improving safety; second, we never have to search for propane or deal with changing tanks and adaptors when cruising internationally. With our solar panels and typical short motoring in and out of anchorages, we can often go about a week before running the Integrel system to top up the batteries.
Safety and simplicity are core elements of the Outremer design. We further enhanced this with carbon fiber davits from the 5X model, which allow the dinghy to sit flat for easier access, improved drainage, and additional room for SUP storage. The davits also allow the solar panels to be mounted higher, significantly reducing shading from the boom and coachroof. We installed powerful Hella lighting under the davits, making the boat easy to spot in crowded anchorages at night and providing excellent lighting for boarding the dinghy or Relentless after dark.
The cockpit is fully enclosed and extremely secure, with nearly all sail handling managed from within the cockpit—making sailing both comfortable and safe in all conditions.
Beyond the boat itself, the Outremer community has been a wonderful part of the experience. There is an instant connection and respect when meeting other Outremer owners, and the owners’ group has been an incredible source of support and shared knowledge.
Reluctantly, we are offering RELENTLESS for sale due to family circumstances. We are confident she will bring her next owners the same sense of freedom, confidence, and adventure that she has brought us.
RELENTLESS is an “owner’s version” layout with three staterooms and two heads. The interior is entered through a sliding glass door. The salon is on the same level as the cockpit, making for a seamless transition from outside to inside. Roll down insect netting with magnet closures allow the doors to stay open when the bugs are out. The galley is along the aft bulkhead. A large dining table and settee are forward to port and the forward-facing navigation station is to starboard. The salon table lowers and infills for sleeping.
The port hull is dedicated to the owners. A stateroom with queen-plus size berth is aft. The head and separate shower stall are forward. Closets and cabinets are midships in the passageway. The starboard hull is for guests. The forward stateroom has a lower double bunk and an upper, fold-away hanging bunk. The head is inboard and forward of the companionway and a stall shower is aft of the companionway. The aft stateroom has a large berth, dressing seat, and small closet.
All overhead spotlights are wall-switched. Berths are fitted with flex-arm reading lights. Overhead hatches have Oceanaire screens and blinds. Hull side ports have blackout inserts. Joinery is light European Oak. Cabin soles are a darker “wenge” composite. All furniture is foam cored to keep this performance catamaran light. Countertops are white Corian with low fiddles.
- Mabru 12,000 btu 230V/60hz/50hz air conditioning/heater in salon with ducting to owner’s hull
- Webasto Thermo Pro 90 31,000 btu diesel heater with heat exchangers and fans in each stateroom, heads, and salon
- (3) Portable USB-powered cabin fans
- (9) Caframo white three speed cabin fans
- Chrome flex arm reading lights at each berth
- 12V/USB charging outlets at each berth
- Indel B Safe 10E Plus valuables safe under owner’s bunk
- Roll-up bug screen for salon/cockpit door
- Custom fit bedding from England including duvets, covers, pillows, and quilts
- (2) San Marin electric fresh or saltwater flush heads
- Interior upholstery is Sunbrella Lopi Cloud – LOP R028 140
- Daggerboard casings covered by Pearl White Silvertex
- Soba 220V 3kg clothes washer
Galley:
- Franke 16” x 13” x 7” and 6” x 16” x 5” stainless steel sinks
- Grohe single lever faucet with pull out sprayer
- Seagull water purification filter with dedicated faucet at sink
- Isotherm front loading refrigerator
- Isotherm front loading freezer
- SnoMaster Liesure Series 12V/120V/220V portable combo fridge/freezer
- Lodge steel two burner griddle pan
- Magma stackable pot/pan set
- Dry mop/duster kit
- Kalorik 120V air fryer
- Keurig 120V coffee machine
- Instapot 220V pressure cooker
- Kenyon two burner induction stove with silicone rubber cover mat
- Klarstein 220V 50hz dishwasher
- Miele H7240BM 220V 50hz combination microwave/convection oven (new 2026)
- Galleyware including: bowls, dishes, cups, silverware, cookware, and storage containers
- 220V electric immersion kettle
- 220V blender
- 220V Iron and table ironing board
- 220V Hand mixer
- 110V vacuum sealer and bags
SALOON:
- 59” x 31” salon dining table folds over into smaller table with fiddles
- (14) overhead diming spotlights
- (2) Outremer 5X lights with shades outboard
- (2) Black flex-arm touch red/white reading lights
RELENTLESS has white gelcoat hulls with black antifouling and green over blue boot stripes. The bottom received two coats of black Seahawk Islands 77 antifouling paint in January of 2026 at Grenada Marine. Hull side graphics are in vinyl. RELENTLESS’ inboard and outboard hull sides were completely wrapped at the shipyard before delivery. In January of 2026 this wrap was removed by Grenada Marine and replaced with simple graphics, exposing hull gelcoat for the first time. Reverse sheer bows, extended scoop sterns and flared hull sides are evidence of the last hull iteration of this model done in 2018.
The sterns have long swim platforms and are covered with faux teak Dekking. A hot/cold shower is to port. A stainless-steel swim ladder with teak treads folds out of a locker in the starboard platform. Stainless steel grab rails are inboard and outboard. Pivot sockets for the gangway are mounted in both sterns.
Decks are covered with light grey SeaDek EVA foam padding adhered atop the factory non-skid. This padding is extremely comfortable under foot or knee and provides excellent traction when wet or dry. GT3 Creative in Rhode Island installed these pads and maintains computer cut files for each pad. New pads can be ordered in the event that any need replacing. 30” high double Dyneema lifelines run along each side deck between bow pulpit and stern railing. There are midship’s boarding gates on each side. Teak dolphin-watching seats are mounted on the pulpits. A molded-in toe rail runs below the lifelines. Deck hatches and opening ports are Lewmar. Round Goiot escape hatches are mounted below hull companionway ladders on each side.
Deck accessible storage is voluminous. Each bow has a climb into sail locker with stainless steel access ladder and LED lighting. Line hanging bars run along the hull sides, just below the deck. The sail locker bulkheads are watertight. Crash boxes forward and low in each bow provide additional collision damage protection. Just forward of the mast are two deck lockers housing the anchor chain, diesel tanks, and other gear. The Plastimo liferaft is stored in a cradle located in the port/aft trampoline corner, making the raft accessible from above or below the trampoline.
The trampolines were replaced with new ATN 25mm silver Dyneema nets in January of 2026. An optional carbon/composite longeron acts as a compression beam between the hull and forward cross beam, extending forward with attachment for flying sails. A staysail chainplate is a few feet aft of the headstay.
The Outremer 51’s cockpit is down two steps from the side decks making a very secure space when offshore. Seats wrap around the back. These seats have storage lockers below. 3” thick seat cushions are held in place with bolt ropes. Two tables are mounted on pedestals and can be lowered and infilled for lounging and sleeping. The starboard side table is hinged and folds over to join the port and make one large table. The tables are foam cored white laminate and trimmed with teak. The entire back seat allows forward views through the cabin doors and windows, a nice feature when underway. The cockpit sole is covered with faux teak Dek-king. A removable teak grate covering a drainage channel is aft of the sliding glass door. Storage lockers are also below the side deck/cockpit steps.
A fixed bimini with full canvas enclosure shelters the cockpit. This factory installed canvas has clear roll-up windows and bug screens. An additional set of mesh side and back panels was customs made for shade in the USA. Solar panels and a rain catchment gutter are atop the bimini. Eight recessed dimming spotlights and stereo speakers are below the bimini.
A custom two-person helm chair is to starboard. This replaced the uncomfortable factory-provided fiberglass chair. This fantastic chair has sculpted ergonomic cushions. Folding arm rests, folding bolster and folding teak footrest allow easier passage through the helm area than the standard helm seat. The bolster lets one lean when standing. A stainless-steel helm bimini was recently fabricated in Grenada. The frame is removable and can collapse to either side if contacted by the boom. Under normal sailing conditions the boom clears the bimini top. The grey yacht acrylic top canvas has an overhead sail viewing window and roll down back panel.
RELENTLESS’ hulls were wrapped in 3M vinyl at the shipyard. This vinyl remained in place until January of 2026 when it was removed and the current vinyl hull side graphics installed at Grenada Marine. The recently exposed hull side gelcoat is in excellent condition.
- Lewmar vertical capstan 12V anchor windlass with line handling gypsy head with foot button controls, wireless handheld remote, and control switch at helm
- Ultra stainless steel 27kg anchor with 275’ of 3/8” galvanized steel chain (used for two seasons)
- Stainless-steel anchor roller under forward cross beam for primary anchor
- Secondary anchor roller atop forward cross beam
- Custom Dyneema anchor/mooring bridle
- ATN 25mm silver Dyneema net trampolines (new Jan 2026)
- GS Composite carbon fiber gangway with storage bag
- RevolveTec rollable boathook
- Fortress FX-55 aluminum anchor with 12’ of plastic covered chain and 200’ of lead-weighted line rode; and storage bracket in starboard bow locker
- (6) Fendertex inflatable vertical fenders with canvas covers
- (3) Fendertex inflatable horizontal fenders with canvas covers
- (2) Fendertex inflatable round fenders with canvas covers
- (3) Taylor size A4 white round ball fenders
- Fenderstep
- (10) 13.5” long mooring cleats with stainless steel chafe bars
- (2) Wood fenderboards for laying against pilings
- (4) 1” diameter 15m long black plaited 8 strand dock lines
- (4) ¾” diameter 15m long black double braid dock lines
- Ultraline flat rope reel -stainless steel, rail mounted, 300' of line
- Tiller extension for outboard engine
- Suzuki 15hp four stroke engine (new 2026)
- Deck washdown – salt or freshwater
- (4) Folding padded “Relentless” cushions
- Grey yacht acrylic canvas covers for large Lewmar deck hatches
- Grey yacht acrylic canvas for winches
- Grey yacht acrylic covers for cockpit tables
- Exterior canvas color is Sunbrella Titanium P054-152
- Silvertex Plata no. 122-4001 grey cockpit seat cushions and table infill cushions
- Padded grey yacht acrylic wheel cover
- Factory-supplied full cockpit enclosure canvas with clear/roll up windows and insect screens
- Sunshade/screens for cockpit sides and aft – custom made in USA
- Canopee yacht acrylic deck shade for trampoline/bow area
- Plastic-coated mesh covers for salon side and forward windows
- Grey yacht acrylic covers for salon side windows
- Custom helm seat with folding arms, bolster, and teak foot rest
- Stainless-steel/canvas bimini over helm seat, removable and fold down
- OC Tenders carbon fiber model 330C tender with (2) fish rod holders and (2) varnished wood oars
- Yamaha Enduro 15hp two stroke outboard engine (new 2026) with (2) fuel tanks
- Stazo stainless steel outboard engine lock
- Stainless steel chain dinghy lock
- Mantus aluminum 2kg anchor with plastic chain and line rode for dinghy
- Dinghy swim ladder
- Dinghy LED navigation lights
- Outremer 5X carbon fiber dinghy davits with solar panels on top and (2) Hella LED lights shining down at water
- (2) Molded fiberglass, swivel outboard helm/tiller seats
- (2) Carbon fiber tillers with storage brackets under hull side shelves
- Caron fiber rigid bimini with rain catchment gutter
- (2) Rail-mounted fishing rod holders
When motoring on passage, one engine is used. The seller reports consuming one gallon per hour at 2200 rpms and achieving 8 knots through the water. The engine rooms are accessed through Lewmar deck hatches on the intermediate stern swim step. The engine rooms are clean, corrosion, and odor free, LED lights are fitted for nighttime engine checks. One can stand aft of the engines to access all necessary components and check fluid levels. A watertight bulkhead separates these machinery spaces from the accommodation.
RELENTLESS has upgraded Forespar Marelon fiber reinforced plastic through hull valves, replacing the standard European alloy valves which have limited service life. All valves, hoses, and systems are labelled. Other pumps and systems are located in the bilge areas and below aft stateroom bunks. Access is very good for all systems. Sufficient spare parts and tools are included.
- Jeffa black composite fiber steering wheel with chain/cable to quadrant disengages with clutch when using mechanically linked carbon tillers
- Optional carbon fiber tillers and outboard swivel seats
- (2) Volvo Penta D2-40F diesel engines with SR130SR-D saildrives and Volvo three blade folding propellors (port – 779 hours, stb – 694 hours)
- Dessalator Freedom 100L/H 12V watermaker (522 hours)
- Wema fuel tank gage
- VDO water tank gage
- (2) Marco UP6/E electronic gear 12V freshwater pressure pumps with smart sensors
- Isotemp 40 liter “triple energy” hot water heater (220V/Webasto/engine – heated)
- Indel/Webasto DB35F refrigeration/freezer 12V compressor and Isotemp through hull condenser
- (4) Whale Supersub Smart 1100 bilge pumps
- (4) Whale Gulper 320 12V electric bilge pumps
- (2) Plastimo manual bilge pumps
- Whale Gulper 320 shower sump pumps
- (2) Jabsco electric flush heads (salt or freshwater flush)
- (2) Racor 500 series primary diesel fuel filters with vacuum gages
- Webasto hydronic heating system with “summer valve” for isolating hot water heater
- Hot/cold freshwater shower on port swim step
RELENTLESS has a high specification power generation and distribution system to minimize engine run time and weight. The owner reports being able to sit for five days on battery power without running an engine to charge batteries. Two large inverters provide 110V or 220V power to the all-electric galley and other loads. There is no propane. Batteries are charged by solar panels and the Integrel Power system. This port engine mounted Integrel generator puts out over 5kw of 48V power, charging the (4) 25V 200ah service batteries very quickly. 48V to 12V DC to DC converters and an AGM buffer battery transition this stored energy for the non-inverter loads. When docked, one can plug into either 110V/60hz or 220V/50 hz shorepower for worldwide capabilities.
In 2022, RC Marine of Portsmouth, RI went through the electrical system and rewired most of the high amperage DC wiring and many other components to vastly improve the electrical system over the standard Outremer installation.
- (4) Victron 25.6V 200Ah Lithium batteries connected in series for 48V service bank
- Lifeline GPL-4DL AGM 12V buffer battery (new 2026)
- (2) Deka Marine Group 24 engine start batteries (new 2026)
- (2) Smartplug shorepower inlets (120V and 220V)
- European round pin 16 amp to 32 amp shorepower cable adapter
- Marinco 15 amp to 30 amp shorepower adapter
- 16 amp 75’ shorepower cord on reel
- Smartplug 50’ 30 amp 120V shorepower cord
- Sterling Power Pro Save W galvanic isolator/zinc saver
- Victron Galvanic Isolator VDI-32A
- Blue Sea Systems 30 amp ELCI shorepower breaker/reverse polarity indicator
- 800 watts of solar panels mounted on dinghy davits
- (3) Victron MPPT 150/70 -MC4 SmartSolar charge controller
- (3) Genasun GVB-8 48V 8 amp solar panel regulators
- (3) Victron Orion-TR 48/12 – 30 DC to DC 48V to 12V converters
- Victron Quattro 48V/5000watt/70 amp 220V/50hz inverter/charger
- Victron Quattro 48V/3000watt/35 amp inverter/charger
- Victron Lynx 1000 amp shunt
- Victron color control GX Remote display/control at chart table
- Integrel Solutions control/monitor display at chart table
- Integrel Solutions port engine-driven 5kw 48V smart alternator with control and monitor panel at chart table
- Fusion stereo with (4) 6” round Fusion speakers
- Bosch 12V 115amp alternator on starboard engine
- 12V outlet in cockpit
- 12V outlet in stb hull shower
- 12V and (2) USB outlets at chart table
- 120V outlets under each bed
- 120V and 220V plugs throughout
- Portable solar panel for charging dinghy battery
RELENTLESS is fun to sail with a perfect blend of performance and handling such that a couple can easily reel off miles during offshore passages. A carbon mast was selected for performance and fixed from rotation for simplicity. A complete North Sails sail inventory, including 3Di main and jib, provide horsepower and longevity. Four electric winches and top-quality Harken and Antal deck hardware handle the loads nicely. Electric winch buttons are at foot level keeping both hands available for line handling. Side racks on the boom, Doyle Stackpack, and lazy jacks manage the full-batten square head mainsail. Weight is minimized with carbon bulkheads, carbon 5X davits, and optimized foam coring. Tillers and mechanical steering send feedback to the helmsman vs. the standard hydraulic steering.
- White painted Lorima carbon mast. Stainless-steel rod diamond stays and single spreader with LED deck lights, top of mast wrapped with green decorative vinyl
- Kevlar shrouds with vibration dampers to prevent hum in strong winds
- (4) Lunar Marine anodized aluminum folding steps – two at top of mast and two at base
- White painted aluminum boom with welded tube gull wing racks for mainsail
- Doyle Stackpack lazy bag (new Jan 2026)
- Spectra lazyjacks
- Custom fiberglass/foam removable boom cradle
- Low stretch halyards including: spinnaker halyard, 2:1 code 0/genoa halyard, staysail halyard, jib halyard, 2:1 mainsail halyard, topping lift/spare mainsail halyard
- Facnor LS290 jib furler
- Antal HS24 mainsail luff track/car system
- (4) Antal GripPlus stoppers on port side of mast above halyard winch
- Harken ST50 winch on mast for halyards
- 4:1 German-style mainsheet allowing easy traveler movement
- (3) Mainsail reef lines led aft to electric winch and stoppers at helm
- Harken ST60 3 speed electric winch at helm for mainsail halyard and other loads
- Harken ST50 2 speed electric winch at helm
- Harken ST50 2 speed electric winch on port side of coachroof with control button at helm
- (2) Harken ST50 2 speed electric winches in cockpit
- (2) Blue Performance winch handle holders at cockpit winches
- (3) Harken winch handles
- Harken 2:1 mainsheet traveler with control lines led to electric cockpit winches
- Harken curved jib sheet traveler with pin adjustable stoppers
- 2:1 Jib sheet led to cabin top winches
- Harken genoa tracks on top of coach roof with 4:1 line pullers
- (2) Harken Air 75 standup blocks outboard on coachroof for code 0 and genoa sheets
- Electric winch safety disconnect switch at helm
- Carbon longeron with 2:1 tack line and stopper for tacking genoa, code 0 and code D
- Staysail chainplate on longeron set aft from headstay
- Harken Air 100 standup blocks on each bow for symmetric spinnaker tack lines
- Harken 6:1 black & tackle with carabiner hooks and spectra strops – boom vang/preventer
- Karver 7” furler for staysail
- Karver carbon 80 series furler on longeron end for genoa/code 0/code D
- North 3Di mainsail with Rigging Projects gaff lock carbon head car system
- North 3Di self-tacking jib
- North Code 0
- North Code D
- North staysail with luff torsion rope and continuous line furler
- North symmetric spinnaker with ATN sock
- Messenger lines for removing halyards during offseason storage
