E686 LRC Motoryacht

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Make: Endurance

Model: E686 LRC

Draft: 5 ft 2 in

Year: 2018

Length Overall: 71 ft 2 in

Beam: 18 ft 10 in

Hull Material: Fiberglass

Fuel Type: Diesel

Total Power: 2,002 hp

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The Endurance E686 is the Skylounge version of the 680 LRC Motor Yacht, and features the same equipment. In addition to the fully enclosed and furnished Skylounge, we replaced the Lower Helm with a larger curved banquette style dining area across from a peninsula galley bar.

The design of the Hampton Endurance series represents a new, unique combination of safety, comfort, and efficiency in a serious cruising yacht. This is based on rigorous engineering as well as extensive experience. Few yachts in this size range embody both; though that may often be claimed or implied.

The builder’s objectives for these craft included high efficiency across a range of speeds, combined with comfort and safety on long ocean passages. Cruise speed was to be 10-12 knots, with an efficient top speed of 18-20 knots; and a very long range at 9-10 knots. Naval Architect and Licensed Professional Engineer Howard Apollonio was engaged to develop the overall design of these vessels. He notes that it is hard to make a slow boat go fast; but much easier to make a fast boat go slow. The trick is to do so efficiently.

The beginning of this solution was the design of the Hampton Hybrid Hull. Its roots go back to Apollonio’s development of split-chine hulls starting in 1977. With his specialty in hydrodynamics, he studied the shortcomings of conventional hulls with respect to wavemaking resistance. To overcome these, he divided the forward chine into upper and lower parts to reduce bow wave while retaining dynamic lift and spray control. The forward cross sections were made to resemble those of traditional round-bottom hulls to insure a smooth ride in waves. A combination of race boat and sailboat characteristics was employed to insure superior directional stability in following seas. Decades of successful versions of this hull form led to constant praise of Apollonio’s designs, large and small, fast and slow, including fine performance in severe sea states.

 The Hampton Hybrid Hull combines this experience with recent design changes to these hulls where the lower chine actually disappears in the forward of the hull. That also eliminates wave slap at rest. This, and changes to the upper chine, required very careful development to be successful. That was then proven in extensive model tank tests of this hull in rough and smooth water. The results confirmed the intended high efficiency in the targeted speed range, combined with exceptional seakeeping in very rough conditions, including sea state 4. The latter actually exceeded that of good 80-90 ft hulls in the same sea states at the same speeds. In the model tank test, significant (average of the 10% highest) vertical accelerations were low at 0.34 to 0.47g’s at speeds of 8 to 20 knots in sea state 4, with a 59 ft. boat length. The deck stayed dry in all cases.

 It should be noted that this hull overcomes the often-cited limitation of so-called “hull speed” at speed/length ratio (SLR) of 1.34. Its speed of 12-18 knots represents SLR = 1.57-2.35. This is in the pre-planning “hump” speed realm, which is a notoriously difficult regime to operate for most boats. And, this model has a displacement/length ratio around 240, which makes it far from a lightweight. Another part of this hull’s success is the careful proportioning of its basic hull form. The center of gravity and center of buoyancy at about 56% of waterline length sets the stage for fine waterlines forward and optimal stern fineness (while preventing squat). These, and the modest prismatic coefficient Cp=0.67, all match the criteria for efficient operation in the planned speed range. Carefully integrated propeller tunnels and a keel of modest depth provide protection without compromising shallow draft (around 5 feet).

 Onto and into this superior hull form is placed a spacious, comfortable interior. This benefited from Apollonio’s long, successful experience designing motoryachts large and small. Attractive, interesting public and private areas are tastefully and ergonomically arranged and proportioned. Rails and soft features enhance safe movement in rough conditions. A combined social bridge and galley area make for a friendly pilothouse. The helm station can be isolated from the rest of the interior with curtains for night navigation. The partially separated salon provides a separate conversation area; yet is open enough for socializing with the galley and pilothouse. The large aft deck with built-in seating and table is an ideal location for fair weather gatherings. So too is the seating forward of the protective Portuguese bridge. An expansive flying bridge features abundant seating, storage, bar, and meal-prep areas, covered with a well-styled hardtop canopy. The lower level features a grand ensuite master stateroom with king size bed and several arrangement options. A queen bed ensuite VIP stateroom is forward. Between is a guest cabin that can have twin berths, or over-under berths and an ensuite head. Optional crew quarters are offered aft of the finely finished, ergonomically arranged, professional engine room. The optional skylounge version, opening up tremendous space and arrangement possibilities. Hampton’s renowned quality of construction and finish completes this picture, and insures lasting value.

   It was deemed essential that the foregoing attributes be packaged in such a way as to meet the highest stability criteria. The Hampton Endurance series was designed and evaluated to meet or exceed the Weather Criterion stability standard of the US Coast Guard for licensed passenger vessels in exposed waters service (Subchapter T, type S vessels, Subpart 170.170), proven for decades to insure passenger safety. Each and every Endurance LRC is, and has been, incline stability tested to determine the G.M. value for confirming compliance to above mentioned standard. Abundant initial stability, illustrated by high GMt values about 3.4 to 4.0 ft fully loaded, insure a solid, confidence-inspiring feel to the Endurance craft. At the same time, roll stiffness is kept to comfortable levels by tuning the roll period to a particular range of values. Historical and engineering research have shown that the ratio of natural roll period divided by waterline beam (Tn/B) should be about 0.25 - 0.27. Above that, boats feel increasingly rolly-poly. Below that, roll becomes increasingly stiff and quick. The Endurance vessels have Tn/B about 0.25 - 0.27, with a safe feel and long-term comfort. 

While the Hampton Endurance yachts are neither particularly light nor heavy, it should be noted that weight has little to do with comfort.  A heavy boat may feel good a first, but will often roll a lot at sea, requiring stabilization for acceptable ride.  Technically, for a particular vessel configuration, adding weight will reduce stability, unless it is added quite low in the boat.  Hence, it is best to keep a boat light, within reason.  A prominent shipyard long ago pointed out that the lightest versions of a standard series of passenger vessels also rode best in head and following seas, compared with their heavier counterparts.  They did not have to plow through waves and take green water aboard; rather rode partly over waves, with acceptable motions.  The other down-side of extra weight, as in most displacement hull craft, is that added weight always increases power required and fuel consumption at a given speed.  Hence all boats should have weight kept to practical minimums.  Practical includes cost and suitably rugged construction, as in the case of the Endurance series.

In summary, the Hampton Endurance series of yachts embodies a fully-integrated set of vital features that function together synergistically.  Comfort, safety, efficiency, solid quality construction, and fine finish are smoothly blended into a yacht that feels right and works right, for confident passagemaking and lasting value.


Length Overall: 71 ft 2 in

Beam: 18 ft 10 in

Hull Material: Fiberglass

Length at Waterline: 61 ft 10 in

Hull Length: 68 ft 10 in

Displacement: 110,000 lbs

Engine Details

Fuel Type: Diesel

Total Power: 2,002 hp

Engine Model: C18 ACERT

Engine Brand: Caterpillar

Drive Type: Direct Drive

Engine Power: 1,001 hp

Engine/Fuel Type: Twin/Diesel

Engine Type: Inboard


Fresh Water Tanks: 400 gal

Fuel Tank Capacity: 2,000 gal

Holding Tank: 150 gal


Hull, Superstructure, and Deck


  • Hand-laid solid fiberglass hull with Cymax (Kevlar)
  • Vinylester resin for first 5 layers of hull lay-up
  • 2 layers of Kevlar from chine to chine and 3 layers of Kevlar in the fwd collision zone
  • Hand-laid fiberglass deck, deckhouse & flybridge cored with high strength Divinycellfoam
  • Hull/deck joint through-bolted every 6”, sealed with 3M 5200 sealant, and glassed over with 3 layers of fiberglass Longitudinal and transverse stringer system
  • Molded F.R.P. rub rails capped with solid stainless steel trim rails
  • Molded non-skid F.R.P. decks
  • Interior structural components all properly bonded to the hull
  • Stainless steel 316L Oval hand rails
  • Stainless steel oval Bow Rail 316L fitted with mid rail

    Sky Lounge / Deck

  • 3 x S/S hatches for hardtop (center one is larger)
  • AC & DC outlets installed at the helm station; AC outlets in sky lounge Chart storage
  • DCS 30" Propane BBQ
  • Complete engine & instrumentation displays includes compass
  • Davit - Brower - Power rotation 1600lb capacity
  • Electronic engine controls
  • Electronic horn remote control
  • Electronics - Refer to navigation section
  • Sky Lounge Enclosure with LED lights
  • Main deck to sky lounge access stairs with safety handrail
  • Sky lounge entertainment center.
  • Sky lounge air conditioning & heat
  • Helm station with (2) Pompanette Platinum Series helm chairs
  • Helm steering wheel
  • Samsung 32" LED TV
  • Hydraulic power steering
  • Courtesy lighting
  • Day Head
  • Luxury seating with designer materials and cherry table Cherry & holly floor
  • Search light remote control
  • Stereo CD/AM-FM DVD player, system with speakers Stabilizer system remote control
  • Stairway "molded fiberglass" from cockpit to flybridge with teak steps treads Tempered glass windshield with wipers
  • Windlass remote control

    Aft Deck & Swim Platform

  • Aircraft style transom door
  • Aft deck storage cabinet with Corian countertop
  • Boarding gates: Port & starboard FRP gates & dual aft S.S. transom gates
  • Boarding ladder storage - portside under wing station
  • Camera - GARMIN (or similar quality) reverse image center mounted under hardtop
  • Cleats - 2X cleats installed on the deck cap rail aft of the boarding gates
  • Cruising settee
  • Table - Cherry wood with a compass rose inlay design. (No warranty on exterior wood tables). Fold down cabinet with 26" LED T.V. centered behind the stbd side of the salon entry door Fresh and raw water washdown outlets
  • Hot and cold shower unit (Attwood) recessed behind FRP Door
  • Day Head
  • LED overhead and deck courtesy lights
  • Port & stbd recessed swim platform cleats
  • Port & stbd transom storage compartments
  • Recessed cablemaster channels - port & stbd swim platform
  • Stainless steel swim ladder
  • Swim platform stainless steel guard rails. 2 1/2" dia.
  • Teak decking on aft deck steps leading to the F/B & Swim Platform
  • Transom stainless steel safety grabrails
  • Port and Starboard wing stations with engine controls and hydraulic thruster controls

    Foredeck & Side Decks

  • Anchor windlass: Muir 3500 dual anchor with remote station controls
  • Anchor 1 x 50kg Bruce polished S/S w/350' chain; 1 x 50kg Plow polished S/S w/250' chain Deckhouse fuel fill & tank vents
  • Foredeck seat cushions - part of the décor package
  • Non-skid recessed decks with LED courtesy lights
  • 316L Oval S.S. handrails
  • Shore power inlets: starboard side of P/H - (2) 240/120V/50A, (1) 125V/30A
  • Storage lockers - below pilothouse windows & forward inside Portguese bridge
  • TV/Phone inlet: starboard side of pilothouse


  • Décor allowance - softgoods, bedding, carpeting, granite-marble & corian selections (see décor allowance) 46” LED HDTV with Bose "Life Style" surround sound system
  • Wine cooler at bar built-in
  • Custom cherry paneling and cabinets with gloss finish
  • Cabinet for entertainment system
  • Carpet with underlay throughout (décor package) Curtain box for salon door
  • Custom cherry end tables
  • Custom upholstered chair with storage below Frameless windows in salon
  • Hunter Douglas Blinds
  • LED overhead and indirect lighting
  • 2 x Upholstered barrel style chairs (décor package)
  • Salon table
  • Salon overhead decorative ceiling treatment in Cherry & ultra suede Stainless steel sliding entry door Upholstered L-settee (décor package)


  • Open design - offering unobstructed open view to the aft deck settee Granite countertop with large sink & serving bar w/bar stools
  • Granite floor - heated (if diesel heat option is selected)
  • Broan trash compacter (or similar quality)
  • SubZero 700TCI refrigerator with (2) freezer drawers; ice maker at bar GE profile Electric 4 burner cook top GE Oven
  • GE Microwave
  • Fisher & Paykel Dishwasher (or similar quality)
  • Garbage disposal
  • Galley drawers & storage cabinets
  • GFCI outlets x 4
  • Large undercounter S.S. sink with Grohe single lever faucet Overhead variable intensity LED lights
  • Pots-n-Pans drawer
  • Storage next to the oven

    Dining Area

  • Chairs with cherry table
  • Art Niche
  • A/C outlet
  • AC outlets at the helm station Air-conditioning – reverse cycle Aircraft style port & starboard doors Storage built in overhead
  • Cherry & holly floor
  • Stair access to lower deck accomodations
  • Curtain box for the port & stbd aircraft style PH doors
  • Curtain box with Hunter Douglas blinds for windshield - (décor allowance) Frameless windows


  • Curved stairway with LED courtesy lights Washer & separate Dryer
  • Utility storage cabinet

    Master Stateroom

  • Full Beam owners stateroom with walk-in head and closet behind the owners berth 3 x Cedar lined hanging lockers & 1 x walk-in clothes locker
  • 32" LED TV
  • Air-conditioning reverse cycle
  • Bed: king size bed with storage underneath Custom S.S. dual port light design
  • Diesel heat outlets (if diesel heat option is selected) Dimmer control for LED lighting
  • Wall sconces
  • Hunter Douglas Blinds
  • LED overhead & indirect lighting
  • Portside bureau with storage
  • Starboard side vanity with storage drawers
  • Stereo CD/DVD AM-FM player, sound system

    Master Head

  • Air-conditioning reverse cycle
  • Cherry vanity with storage & undercounter sink and Grohe single lever faucet Overhead ceiling treatment with accent lighting Diesel heat outlet (if diesel heat option is selected)
  • Granite countertop
  • Granite floor - heated (if diesel heat option is selected)
  • Grohe faucets for vanity and shower
  • LED lighting
  • Large FRP shower stall lined with Corian
  • Opening S/S port light
  • Grohe shower faucet
  • Shower exhaust fan
  • Tecma toilet
  • GFCI Dual outlets

    VIP Stateroom

  • Island berth with built-in storage drawers, with storage underneath Air-conditioning reverse cycle
  • 26" LED TV
  • Carpeting with underlayment - part of decor package
  • Cedar lined hanging locker
  • Diesel heat outlet (if diesel heat option is selected) Drawer storage built into the base of the island bed Headboard reading lights
  • LED courtesy lights
  • LED overhead lighting with dimmer control Opening S/S port lights w/screens
  • Skylight with ocean-Air screens
  • Stereo CD/DVD FM-AM player
  • Wrap around storage cabinets

    Forward Head

  • Air-conditioning reverse cycle
  • Cherry vanity with undercounter sink and Grohe faucet Diesel heat outlet (if diesel heat option is selected) F.R.P. molded Shower Stall with bench seat
  • Granite countertop
  • Granite floor - heated (if diesel heat option is selected) Grohe faucets sink vanity & shower
  • LED overhead lighting
  • Opening S/S port lights x 2 w/screens
  • Overhead mirror in shower deck head
  • Grohe shower faucet
  • Shower exhaust fan
  • Tecma toilet
  • GFCI Dual outlet

    Mid Guest Stateroom / 3rd with Ensuite Head

  • Custom Bed
  • Air-conditioning reverse cycle & diesel heat (if diesel heat option is selected) Cherry and holly floor
  • Cedar lined hanging locker & drawer storage
  • LED overhead lighting with dimmer control
  • Night stand with drawer
  • 20" LED TV; Stereo CD/DVD AM-FM STEREO player

    Crew Quarters

  • Aircraft style transom door
  • 2 x C-Charles Iso transformers - 1x Iso Boost, 1x Iso only
  • 2 x Glendenning 250/125V/50A cable master systems with 75' power cords
  • Crew area with bunk room, desk, locker, head with vanity & separate shower stall
  • Refrigerator with corian counter & storage cabinets above & below
  • FRP decking with rubber treads in passageway; cherry & holly floor in crew cabin & base of stairs LED overhead lighting
  • Preparation for water maker - thru hull, sea strainer, wiring
  • Wesmar hydraulic 25hp stern thruster

    Engine Room

  • Stand up headroom in engine room CAT C-18 1136 HP diesel engines Electronic engine controls - 5 stations ZF transmissions
  • 2000 gallons fuel capacity - athwartships fuel tanks 400 gallons water capacity
  • 150 gallon holding tank capacity
  • 2 x 20 gallon hot water tanks
  • Aquamet 22 stainless steel shafts 3"
  • Bilge pumps - 4 x automatic (3) 2000GPH & (1) 3700GPH Rule or similar brand, 1X manual pump Bronze Seacock's and sea strainers on engine raw water intakes
  • Color coded copper water lines
  • Color coded hydraulic lines
  • Parker fuel lines
  • Engine oil changing system upgrade for gears & generators also (Reverso or similar quality) Engine automatic shutdown system - Seafire system
  • Engine room 24VDC LED lights
  • Engine room bulkhead insulated with extra soundinsulation
  • Engine room emergency bilge pumping system - S.S.mainifold system utilizes engine RW pumps Engine room fans - 24 volt x 4
  • Engine room fire extinguisher - Seafire system
  • Engine room sound reduction insulation (sound down)
  • Fiberglass exhaust mufflers
  • F.R.P. non-skid floors with rubber treads
  • Fresh water outlet
  • Fuel vent filters - Racor marine version MA filters
  • High water bilge alarm
  • Manual bilge pump
  • Pressured fresh water system with Head Hunter pump w/ 24VDC back-up pump Racor Dual 1000FG fuel filters for each engine
  • Racor fuel filters for the generators
  • S.S. engine mounts
  • S.S. rudders and rudder posts
  • S.S. safety grab rails around engines
  • Tides shaft seals - Shafts & rudders
  • Under water exhaust system with bypass to transom
  • Finished bilge

    Electrical System

  • Onan 28KW/240/120V/60Hz generator with sound shield Onan15.5KW/240/120V/60Hz generator with sound shield Air/water separators mufflers for the generators
  • Complete AC/DC breaker/distribution panel with lighting
  • 1 x 50amp C-Charles 24VDC battery charger - Engine start bank 1 x 30amp C-Charles 24VDC battery charger - Bow thruster
  • 1 x 20amp C-Charles 12VDC battery charger - Generators
  • 10 X 115amp AGM batteries w/box for housebank
  • 4 X 200amp batteries w/box 2x per engine for start bank
  • 2 X 200amp batteries w/box for generators
  • 4 X Bilge pumps, (3) 2000GPH & (1) 3700GPH automatic type - Rule brand or similar
  • 4kw Magnasine Inverter/120A Charger with remote panel located in the pilothouse
  • 120VAC outlets throughout -Vimar
  • 2 X 240/120V/50A Glendenning cablemaster systems
  • Aft high bilge water level alarm with warning panels in P/H andF/B
  • Battery selection switches for the House-Engine-Generator-Inverter battery banks w/emergency switch
  • Bonded electrical system
  • Camera monitoring system (GARMIN or similar quality). 2X cameras in the engine room and 1X on the aft deck Color coded AC & DC wiring system
  • Dimmer switches for pilothouse, flybridge, salon, owners and VIP staterooms
  • Fuel & water level indicators - Wema brand
  • GFCI outlets - Vimar
  • Holding tank level monitor
  • LED overhead, courtesy & task lighting throughout ; LED lights under engine stringers
  • Navigation lights (Aqua signal) LED
  • Starboard pilothouse shore power inlets - 2X 240/120V/50A & 1X 125V/30A
  • Shore power protection system - galvanic isolator
  • Shore power selection switch

    General Equipment and Options

  • 316L Grade S.S. oval handrails on the main and flybridge decks 316L Grade S.S. for mooring cleats, chocks & anchor roller
  • 2 X line cutters installed in front of the stabilizer fins Air-Conditioning reverse cycle system - chilled water type Aircraft style doors in the pilothouse
  • Bosch Washer and Dryer (or similar quality) - located in the foyer area Preparation for water maker - thru hull, sea strainer, wiring
  • Central vacuum system 5X outlets
  • Detailed owners manual with drawings
  • Dockside water pressure connection
  • Door locksets, drawer latches & overhead light fixtures - Chrome finish
  • Exterior main & flybridge deck and Cockpit LED Lighting
  • Frameless windows
  • Fresh water deck wash downs at fwd, aft and flybridge
  • Raw water deck wash downs at fwd anchor locker and aft (Head Hunter pump) Search light with 2x remote control stations - P/H & F/B
  • Ship lighting & bilge pump systems indicator panel located in the Pilothouse Stabilizers: ABT Zero Speed with 12' Fins
  • Stainless steel portholes with screens
  • Swim platform with removable 2.5"Dia S/S guard rails
  • Tecma toilets
  • Thrusters - ABT 33HP hydraulic bow & stern thrusters
  • Transom door - FRP covered stainless steel aircraft style door
  • Trim tabs - Hynautic
  • Satellite system pre-wire
  • TV/Cable & Phone inlet - marinco PH6594 TV-SS
  • Underwater lights - 5X total; 3X across the transom and 1X port & stbd aft hull sides Water maker - Prep only. Includes thru-hull/sea trainer, panel break and wiring
  • Electronics: See Navigation and Sat equipment list
  • Wood landing in foyer with "Compass Rose" inlay
  • Wood landing in front of washer/dryer
  • Limited five year hull structure warranty
  • Manufacturer's limited one year warranty on machinery and equipment

    Décor Allowance

  • $ 60,000.00 allowance to cover the purchase cost of all furnishings, blinds, soft-goods (bedding, towels, carpeting, etcetera), dinnerware and installation costs.

    Navigation & Satellite equipment


    $ 50,000.00 allowance: Electronics - Garmin 7215 series - radar, chart plotter, touch screen monitors X4, autopilot, Dpt/Speed/ Temp, GPS, VHF radio X2, AIS & Magnetic Compass. Note: the customer can choose the brand of electronics, the total allowance is $ 50,000.00.

Hampton Yacht Group

Hampton Yacht Group

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