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2005 Beneteau 52' 15.85 m Oceanis 523


Belfast, Maine, United States

Sunflower has been heavily modified to capitalize on Groupe Finot's fantastic design, Group Beneteau's well recognized build quality and an owner's desire to simply make it stronger, more capable and simply better. This is a very special single owner yacht that shows what a production boat can be.

Vessel ID# 2791447Last Updated: 09-01-2022 10:03:54


"The 523 made a big impression on Cruising World Boat of the Year judges, who named it Best Full-Size Cruiser for 2006... When the Boat of the Year judges were summing up their impressions of the 523, they agreed that it “hit the cruiser’s sweet spot” in many ways, from the generous living accommodations to the cockpit to the sails to how it handled under sail and under power." ~ Cruising World

Sunflower has been heavily modified to capitalize on Groupe Finot's fantastic design, Group Beneteau's well recognized build quality and an owner's desire to simply make it stronger, more capable and simply better. This is a very special single owner yacht that shows what a production boat can be. With a whole new rig, upgraded deck hardware, lithium ion battery bank, new racing sales, recent cruising sails etc... This boat is not your average Oceanis 523 Clipper. 



LOA: 53' 1'' (16.18 Meters)

Type: Sail- Used

Year: 2005

Beam: 16'

LWL: 48'

Draft Max: 6'

Cabins: 3

Heads: 3

Fuel Type: Diesel

Hull Material: Fiberglass

Holding Tank: 35 Gallons (132.49 Liters)

Displacement: 32800

Ballast Weight: 4960 lbs

Photos click to view all

Full Details


Beneteau Oceanis Clipper 523

   "The combination of Bénéteau expertise in highly respected cruising yachts with that of Groupe Finot in 60-foot Open racers has given birth to the Océanis Clipper 523. It has been designed for demanding owners and for voyages where pleasure, luxury, comfort and safety are the only masters on board. The deck equipment has been designed for optimal manoeuvrability and accessibility. Cabins with private heads, a saloon laid out with sophistication, exceptional lightness, carefully chosen materials - nothing has been left to chance where the interior accommodation is concerned - making every day on board an exceptional experience." Group Beneteau Brochure

Modification to Sunflower

   Sunflower has been extensively updated over 18 years first to support long range, extended cruising; then to be a fast cruiser for ocean racing. This list includes the updates and modifications.


   The hull below the waterline has been custom faired and sprayed with an exceptionally hard ablative bottom paint for speed yet also suitable for cruising without the need to scrub the bottom.

  • Includes complete spare rudder & hardware. This is the only existing spare Oceanis 523 rudder in North America (verified by Beneteau). 

Standing and Running Rigging

   Nothing is left of the original Beneteau rig. The spars, standing and running rigging, and all blocks/winches/hardware are top quality and sized for ocean sailing. 

  • Mast and boom are custom built by Forespar and installed in Spring 2011 by New England Yacht Rigging, Inc. The standing rigging is discontinuous and strongly built with robust spreader tip, end fitting and turnbuckle hardware. You can see the heavy-duty welded plates of the Passage Maker tangs for the standing rigging. Note the sturdy Leisure Furl gooseneck. The hardware and materials are representative of the quality and strength of these major improvements to the boat.
  • The aluminum mast is anodized, as well as, painted with Awlgrip paint. Several cosmetic repairs to the paint have been made as it has worn in the course of cruising and ocean racing. The Leisure Furl Boom is anodized aluminum. 
  • All standing rigging replaced from the original Beneteau equipment in 2011 with the exception of the (V1) deck to spreader lower portion of the upper shrouds which were replace in 2019. 
  • The halyards are constructed of high tech line and built to withstand offshore conditions.  Note additional dyneema chafe sleeves on the shackle ends. The shackles are over engineered for the typical loads.  All the halyards have been replaced in 2018 and 2019.
  • Examine the genoa, spinnaker and both the inside shroud & outside shroud staysail sheets that are hanging in the forward lazarette compartment. You will see that they are all high tech lines custom spliced with either strong soft shackles or oversized trigger shackles. They all are just a couple years old and have only been used racing to Bermuda 3 times.  There is also a complete set of cruising sheets.
  • The original furling systems have been replaced. The headstay furler is a Schaefer 4100 and the Staysail furler is a Schaefer 2100.
  • The cars for the headsails have been replaced with ball bearing towable cars. Two small winches were added to adjust the cars.
  • Note the quality of the Schaefer roller bearing blocks on the mainsheet system. Other high load blocks are also torlon roller bearing high strength blocks.
  • Numerous additional items of running rigging have been modified or added. The spinnaker tackline that doubles as a whisker pole downhaul is new as are the twings and Genoa furling line and blocking. Two Lewmar 62 manual two speed winches and custom fittings have been added to handle sails better and to run two headsails simultaneously. These winches also handle the jibe preventers and spinnaker sheets. These upgrades make the boat not only pretty but fast. 
  • The headsail sheet lead systems on the side decks have been re-engineered, upgraded to towable cars for precise trimming and a winch has been added next to each steering station to adjust the cars. Custom pad eyes have been welded to the arch to rig the storm trysail and to attach the spinnaker turning blocks.  Tour the decks and you will see many custom layouts that make management of the sails from the cockpit easy and convenient. 
  • A carbon fiber Forespar whisker pole and mast storage hardware have been added to make pole handling a breeze.
  • The original mainsheet traveler has been completely replaced with a Harken heavy duty traveler system. The Traveler car can now be handled by one person from one side of he cockpit under the dodger.
  • Spinlock rope clutches have been added and rearranged. The cams have been swapped out as needed to best fit the line size. The lines all run straight forward and do not cross or chafe.
  • The genoa, stay sail, and mainsail can be handled by one person in the cockpit. A person only has to go out of the cockpit to set the spinnaker, the whisker pole, or the storm sails.
  • The boom is rigged with a jibe preventer on each side. When rigged, we have a line run from the outboard winches to a block forward and back to connect to the jibe preventers on the boom. The jibe preventer can be set while the boom is fully out to either side.
  • The mast and boom running rigging has a good deal of redundancy. There are two spinnaker halyards that can also serve as halyards for other sails as need. They are also used to hoist the genoa and staysail socks when racing sails are furled. The boom topping lift is engineered to serve as a mainsail halyard should need be. The boom is supported by a rigid vang when the mainsail is furled.
  • Winches are cleaned and lubricated annually at least. 


   All sails are made by Thurston Quantum Sails in Bristol, RI. All sails are maintained annually by the sail loft. 

   Cruising Sails:

  • Boom furling, full batten, cruising composite main sail ~ 2011
  • 135% cruising composite Genoa ~ 2011
  • Hydranet staysail ~ 2006
  • Quantum V5 asymmetrical spinnaker ~ 2006

   Racing Sails:

  • 135% Genoa ~ 2019
  • Large staysail ~ 2019
  • Quantum A5 asymmetrical spinnaker ~ 2019

   Storm Sails with Sheets Rigged

  • Roller furling storm jib ~ 2016
  • Storm trysail ~ 2016

Electrical System

   The electrical system has been extensively updated, expanded, and modified. Key features include:

  • Mastervolt Lithium Ion house battery bank.
  • 3 large battery chargers for the house bank, a charger for the bow bank, and a charger for the genset start battery.
  • Mastervolt high capacity alternator with 10 rib belt. 
  • Shore power transformer for isolation from shore power. Transformer is selectable for dual input - 120V 30A or 240V 50A shore power
  • Second shore power connection is added in the bow to give the option to connect shore power in the bow or the stern.
  • All four AC busses are ground fault protected and outlets in heads and galley have GFCI.
  • 200KW inverter for AC power.
  • Solar panels on dodger roof for trickle charge.
  • Major components are monitored by a Mastevolt MasterBus system. All software and firmware of components are up to date and verified by regional MasterVolt technician.
  • 11.5 KW Onan generator set.
  • Custom electrical distribution panel, backplane, and instrumentation panel at the Nav station.
  • Electrical system is thoroughly documented. (see book on salon table). 



  • The electronic navigation suite is the lastest version Raymarine suite. Major components are: (3) chart plotters (at the helm, in the dodger and at the navigation station), wind sensor on the masthead with displays at each helm, heading sensor & autopilot, Class B AIS, redundant GPS sources, integrated SiriusXM satellite weather, digital depth profiler, second depth transducer, digital radar, engine monitoring system.
  • Navionics charts for the eastern US, Canada, and the Great Lakes have the latest updates.
  • Electronic Bermuda charts.
  • 5" Ritchie Globemaster steering compasses at each of the two helms.
  • Hand held GPS in ditch bag.
  • System is extensively documented (see book on salon table)


  • Two DSC equipped VHF radios with separate antennas on the masthead and arch. Both integrated with the navigation system.
  • Sirius XM radio and marine weather (requires subscription to the service)
  • System is well documented. (see book on salon table)
  • Handheld VHF radio and DSC in the ditch bag.

Deck and Deck Hardware

   Ground Tackle and Handling Equipment

  • The original single vertical windlass was replaced with a dual capstan Ideal windlass. The anchor locker was divided. This allows the carrying of two rodes and anchors topside. Currently the boat is rigged with a single Rocna anchor and 300 feet of 3/8” chain rode. A collapsible, appropriately sized Fortress anchor is also onboard.
  • Stainless steel plates are added to protect the hatches of the anchor locker from the anchor chains.
  • There is a custom-made anchor snubbing bridle stored in the port anchor chain locker.
  • The two forward most cleats have custom-made stainless steel chafe guards.
  • An addition cleat was added on each toe rail near the stern for spring lines. All four after cleats have custom stainless steel chafe guards.
  • Two through bolted U bolts are added to each side on the toe rail forward of the mast. These allow for better attachment points of mooring lines in port and mount the blocks for the jibe preventer underway.
  • A anchor wash down pump is mounted in the forward lazarette with a hose & nozzle. The pump can also pump fresh water from the fresh water system for topside freshwater washdown. The pump can also take suction on the bilge in the forward lazarette for emergency dewatering. 

   Hard Dodger

  • The boat has a custom built hard dodger. The dodger is ¾” closed cell foam with several layers of epoxy fiberglass on each side. The entire dodger weighs 60 lb without the safety glass. 
  • The dodger has wipers and red/white lighting built in. It has a 120V power outlet.
  • There are several through bolted hand rails in appropriate locations. 
  • Canvas curtains close the back of the dodger in foul weather. Screens close the dodger for warm weather at anchor.
  • The dodger easily supports two men standing on it.


  • An additional wire has been added to the bottom of the forward portion of the life lines. Webbing is strung on this forward section for crew safety.
  • The stainless steel rails of the bow pulpit have been modified to remove the connection between them and reduce how far forward they protrude. This allows for better handling of the spinnaker.
  • The deck fittings for all the lifeline stanchions have been replaced with much superior through bolted Schaefer deck fittings.


  • The boat is fitted with a custom stainless steel arch aft. The arch is extremely sturdy. 
  • The top of the arch support various communication equipment and the stern light.
  • The arch has davits to hoist the dinghy.


  • The boat has a bimini and canvas that connects the bimini to the dodger.
  • The entire cockpit can be closed in with canvas & windows except for the stern.


  • The mast pulpits are modified to have a mahogany deck grate.
  • There is a gas grill that mounts on the aft starboard railing and connects to the propane tank.
  • The boat has two 10 lb aluminum propane tanks.

Forward Lazarette

  • The ladder is modified to give a more user friendly angle and a hand rail is added at the top of the ladder.
  • The storage compartment hatches and deck plates are modified to bolt down for offshore safety.
  • Various mounts and rails have been added for storage of lines and equipment.
  • Washer unit and separate dryer unit.
  • Note the emergency rudder equipment. The rudder spade is stored on the port side and the emergency rudder stock & support tube are stored in the stbd side. Braces and a tool kit are stored on the shelf on the starboard side.

Aft Lazarettes

  • The aft port lazarette is modified with a deck half way down for better storage.
  • The rudder stock tube was strengthened per a design by Beneteau and warrantied by Beneteau. This design installs reinforcement to give the rudder tube more strength in the event of the large spade rudder hitting something.
  • Both lazarettes contain permanently equipment that has been added to the boat.


  • The cockpit has cushions for the seats.
  • The cockpit is fitted with multiple D-rings for dual jack lines. This allows a person to clip their tether before leaving the salon.
  • The salon washboard hatch is modified with a window so the crew below can observe the crew above decks. The washboard also has a retaining line so that the washboard is not lost overboard.
  • Each helm is fitted with a custom stainless steel hand grip for the helmsman. 



  • There is custom cabinet mounted against the bulkhead, centerline, forward. It has an upper section for glasses, a liquor cabinet with adjustable fiddle in the middle, and an ice maker in the bottom
  • All overhead lights have been changed to LED
  • Two red or white adjustable reading lamps are mounted on the port side outboard the table.
  • Salon table has been modified to lower and form a large bed. There is a cushion that goes over the table in this configuration.
  • The port salon bench has been modified to provide an access hatch for easy access to the discharge hull valve for the forward head. A ventilation grill with a temperature switch controlled cooling fan has been added to cool electrical system components under the bench. 
  • The centerline bench locker has been modified internally for better stowage at sea.
  • A “Hurricane II” hydronic heating system has been installed. The diesel fired boiler is in the aft starboard lazarette. Each stateroom and the salon has its own fan and temperature control. The heating unit in the salon is twice the size of the staterooms and can also heat the dodger when it is enclosed.
  • The salon has a satellite and over the air TV system. The TV can also display the main chart plotter or a DVD player.
  • The water system includes a Seagull filter for a spigot at the basin in the galley.
  • A coffee pot with an internal carafe (so no pot will go adrift at sea) is permanently mounted on the starboard side.
  • The stove has been upgraded to a gimballed three burner Force 10 stove and oven. A stainless steel sheet is installed for safety in the overhead above the range.
  • The silverware drawer in the center island has a custom divider.
  • The air conditioning units in the salon and staterooms have been modified to replace the carbon steel drip pans with stainless steel drip pans to prevent corrosion.
  • The original two refrigerator/freezer units were removed. A custom refrigerator and freezer were built. All sides of these units except the front doors have 4 inches of rigid insulation. The doors are custom made vacuum insulated panels. The refrigerator and freezer each have their own Frigiboat cooling systems with external “keel” cooling plates. These units are computer controlled by control panels on the main instrument panel
  • The main instrument panel at the Nav station (forward of the two panels) and the main electrical distribution panel at the nave station are part of the extensive electrical system upgrade. See the electrical section.
  • Various instruments and controls have been relocated from their original positions throughout the boat to the main instrument panel for ease of operation and better monitoring.
  • The Nav station is fitted with a red/white articulated reading light.
  • A bilge alarm system and bilge pump counter have been added and read out at the Nav station.
  • All deck plates in the salon have been modified to bolt down. The two aft centerline ones over the batteries and hull valves; and the one centerline forward over the bilge are equipped with quick release anchors and recessed handles for rapid access. 
  • The openings in the overhead for the dorades have been modified so they can be shut or throttled.
  • There are screens for the salon side window hatches.
  • The overhead hatches are fitted with OceanAir screen/shades.
  • The stand up locker in the aft port corner has been heavily modified internally to house the phone system, the satellite TV, and the DVD player on a rack that can slide out for maintenance.
  • All original Beneteau dishes and silverware.

   Owners Stateroom (Forward)

  • The owner’s head – and both aft stateroom heads - has been rebuilt with a “SailVac” vacuum flush system. This has the additional advantage of closing up two un-needed hull openings for each head.
  • There is a custom locker built along the port side outboard the bed. 
  • All overhead lights and the two reading lights have been replaced with LED lights. 
  • The owner’s bed is fitted with lee cloths on both sides and down the middle (see eye loops in the overhead). 
  • The owner’s bed has a custom mattress that is raised to prevent condensation.
  • The large storage lockers under the owner’s bed are modified so their covers are bolted down for safety at sea.
  • There is a custom shelf added to the starboard side outboard the bed.
  • The stand-up locker in the aft starboard corner is modified to provide access outboard of the locker for additional storage.
  • Hooks are installed to hang up safety gear and clothing.
  • All deck plates are modified to bolt down for safety at sea. The centerline deck plate is fitted with quick release anchors and recessed handle for rapid access to hull valves under it.

   Aft Staterooms

  • Both staterooms are modified with SailVac vacuum flush heads like the owner’s stateroom.
  • Overhead hatches have OceanAir screen/shades.
  • Bunks are fitted with articulated reading lights.
  • The bunks are raised to provide ventilation and prevent condensation.
  • Hooks are installed on the bulkheads for safety gear and clothing.
  • All side hatches have screens.
  • There is a variable speed fan installed at the aft end of each bed for improved ventilation.
  • Each bed is fitted with a lee cloth down the middle.
  • The starboard stateroom has an extra fuel tank added under the bed.
  • The port stateroom has a 600 GPD Village Marine water maker installed under the bed with a remote control at the Nav station instrument panel. It can fill either water tank.

   Engine Compartment

  • A Maritron Engine Monitoring System has been added to the engine and integrated with the navigation system.
  • A high capacity alternator has been added to support the Lithium Ion house batteries. Note the custom reverse mount for the alternator and the 10 rib belt for power transmission.
  • The engine’s cooling system is integrated with the hydronic heating system through a heat exchanger so that the engine can heat the boat and hot water when running.
  • The fuel filters have been upgraded to Racor filters.
  • The area over the forward end shows some of the extensive upgrade to the boat’s electrical system.
  • The hot water heater has been replaced with a more efficient Isotherm unit.
  • The shaft seal has been replaced with a PYI mechanical seal.
  • The original fixed propeller has been replaced by a feathering MaxProp.
  • A “Shark” rope cutter has been installed.



  • 170 gallon

   Fresh Water

  • 250 gallon

   Holding Tanks

  • 3 x 35 gallon tanks

Safety Systems

  • Boat has been inspected for the 2022 Newport to Bermuda race and meets all safety requirements for that race.
  • All equipment that needs to be inspected or certified (e.g., life raft, flares, fire extinguishers, EPIRB, propane tanks, MOM 8A, etc.) is in date.
  • Jack lines – for the port and starboard side on deck and one on each side of the cockpit sole.8 person life raft with a greater than 24 hour survival kit stored on deck with a hydrostatic release.
  • MOM 8A on stern rail
  • LifeSlingFloating line in a throw bag.
  • Port cockpit locker: Added hand bilge pump in salon to supplement hand bilge pump in cockpit.

  • Manually activated “gulper” bilge pump.
  • Ditch bag (including EPIRB and handheld VHF)
  • SOLAS flare set meeting USCG requirements
  • DC kit (for flooding)
  • Collision matt (fothering) and lines
  • Bosun’s chair
  • Dry chemical fire extinguisher
  • Automatic 1100 GPH bilge pump.
  • Automatic high capacity 4000 GPH 2” discharge bilge pump.
  • Masthead tri-color light with backup power supply.
  • Digital recording barometer.
  • One dry chemical and two halotron fire extinguishers below decks.
  • Air horns for alerting crew (salon, dodger, and helms).
  • LED search light.
  • Gale Rider drogue.
  • 5 Life jackets.
  • Emergency rudder – custom made emergency rudder similar to a windvane steering system except without the wind vane.
  • EPIRB: in the ditch bag.
  • Dock lines and fenders.


   Maintenance requirements are tracked, performed, and recorded. As an example of how maintenance is tracked and performed, spring startup checklist is on the salon table for your review.

  • Sails are taken annually to Thurston Quantum Sails in Bristol for inspection and repairs
  • Great Island Boatyard (GIBY) performs maintenance appropriate for a boatyard.
  • GIBY also performs maintenance on critical systems like the engine.
  • Owner and crew perform routine regular maintenance within their capability.
  • Appropriate spares are carried.
  • Set of tools are included (hand tools - screwdrivers, pliers, wrenches, metric & english socket sets, multimeter, wire stripper/crimper, and heat gun).

Represented by a Certified Professional Yacht Broker (CPYB)

   A Certified Professional Yacht Broker (CPYB) is recognized as having achieved the highest level of industry accreditation, available only to fully-qualified yacht sales professionals. The CPYB program is administered by Yacht Brokers Association of America in partnership with Florida Yacht Brokers Association, Northwest Yacht Brokers Association, California Yacht Brokers Association, Boating Ontario Dealers, British Columbia Yacht Brokers Association and Gulf Coast Yacht Brokers Association.

    The CPYB program is also endorsed by the Marine Retailers Association of the Americas (MRAA) Marine Industry Certified Dealership (MICD) program and leading yacht manufacturers as a key component of their own industry standards; the highest level of achievement for their member yacht sales professionals.

Experience & Validity

    The CPYB designation is earned by eligible yacht sales professionals, who, after serving a minimum of three years as a full-time professional, have successfully completed a comprehensive written examination to validate professional competency.

Continuing Education

    A CPYB is committed to their personal and professional development through continuing education, as mandated for CPYB recertification every three years.

Ethics & Standards

    A CPYB adheres to, and is accountable to, a nationally recognized Code of Business Ethics and conducts yacht sales transactions in accordance with a stringent set of industry standards of practice.

Fiduciary Responsibility

    A CPYB maintains a dedicated escrow/trust account to protect their client’s funds. A CPYB understands their fiduciary responsibility and obligations with respect to client funds.

Transaction Management

    A CPYB uses proven, industry-recognized transaction documents, which fully and clearly describe all terms and conditions of a transaction. Honesty & Integrity A CPYB maintains the highest standards of professionalism, acting with honesty and integrity.

Trust & Confidence

    A CPYB instills confidence, trust and consistency in all transactions involving fellow yacht sales professionals for the benefit of the client.

Mechanical Disclaimer

Engine and generator hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.


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.

Scott Woodruff, CPYB

SUNFLOWER 52ft Beneteau Yacht For Sale

East Coast Yacht Sales

44 Bayview Street
Camden ME 04843 USA
Phone: 1-207-236-8656

Since 1986 we have opened five more offices over the past 32 years in Camden and Belfast, Maine, Salem, Massachusetts, Newport, Rhode Island and Mystic, Connecticut attracting twelve of the best brokers on the east coast. We are not just another boat brokerage hanging out a shingle, we invest in what we believe in: the product. We inventory Sirena Yachts, Axopar and J/Boats. We service our boats and customers unlike many brokers in the business. We take trades and we are fair to our customers. We understand the value of our customers over the long run.

SUNFLOWER 52ft Beneteau Yacht For Sale

Scott Woodruff, CPYB

Yacht Broker, CPYB

44 Bay View Street
Camden ME 04843 United States
Office: 207-236-8656
Direct: 954-701-1072
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Scott makes his passion his career. Growing up in a sailing family, Scott was on yachts from an early age cruising Block Island Sound as well as the Maine Coast. Upon entering college, he started racing and was introduced to dinghy sailing where he honed his skills. After college Scott joined the Living Classroom Foundation in Baltimore originally as a volunteer and then as an employee where he taught sailing to inner city youth, assisted with their boat building program and met his wife of 22 years, Alex.

Returning to Maine in 1998, Scott started his professional career in the yachting industry by taking a job with Sun Yachts in Camden, Maine as a Sales Agent. From Camden, Maine Scott worked his way up through the ranks as he moved to Portland, Maine as the Crewed Yacht Supervisor for Stardust. Then on to Tortola in the British Virgin Islands for 7 Years as the Caribbean Yacht Sales Manager for Sunsail. He then moved to Ft Lauderdale, Florida to take on the position of Global Sales Manager for Leopard Catamarans for 7 years. In 2014 Scott returned home again with his family and joined East Coast Yacht Sales taking over the Camden Office and then opening a second office in Belfast, ME.

Scott knows the yachting industry. Having represented and worked with many of the industry leading manufacturers, traveling globally to work with factories on build projects, and working with many of the industry’s leading designers, Scott is well positioned to help buyers and sellers navigate the buying/selling process.