E720 LRC Skylounge

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72
Length
4
Staterooms
6
Heads
2018
Year
Details

Make: Endurance

Model: E720 Skylounge

Draft: 5 ft 2 in

Year: 2018

Length Overall: 74 ft 4 in

Beam: 18 ft 10 in

Hull Material: Fiberglass

Fuel Type: Diesel

Total Power: 2,272 hp


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The gorgeous Endurance E720 LRC Skylounge boasts three staterooms, crew quarters and a very expansive Skylounge. With ample social areas and formal dining for up to eight persons, theEndurance E720 will take you and your guests wherever you voyage in style and in luxurious comfort.

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.

Dimensions

Length Overall: 74 ft 4 in

Beam: 18 ft 10 in

Hull Material: Fiberglass

Length at Waterline: 64 ft 6 in

Hull Length: 72 ft

Displacement: 116,000 lbs



Engine Details

Fuel Type: Diesel

Total Power: 2,272 hp

Engine Model: C18 ACERT

Engine Brand: Caterpillar

Drive Type: Direct Drive

Engine Power: 1,136 hp

Engine/Fuel Type: Twin/Diesel

Engine Type: Inboard



Tanks

Fresh Water Tanks: 400 gal

Fuel Tank Capacity: 2,050 gal

Holding Tank: 150 gal



Accommodations

Swim Step & Transom

  • Molded fiberglass full-width boarding step W /movable stainless safety rails.
  • Retractable boarding ladder
  • Spare stainless steel holders for swim platform guard rail
  • Pop-up stainless steel cleats for swim platform
  • Recessed shore power cable safety ports built into the swim platform with light above
  • Fresh water inlet
  • Fresh & raw water wash down systems
  • Hot/cold transom shower
  • Dual Glendenning 50A Cable master systems with 75’ shore power cable
  • Aircraft style safety door to Crew Quarters and Engine Room
  • Molded stairway with teak treads to access aft deck
  • Stainless framed glass latching boarding gates with Endurance logo and LED lights
  • A water tight storage area to Port and Starboard built into the stair walls.

 

Aft Deck:

  • Aft deck settee with custom teak table with ebony, holly & rosewood compass rose inlay.
  • Secure drop down LED TV 26”
  • Stainless steel framed sliding door to salon
  • Fiberglass moulded steps to fly bridge with teak treads
  • Stainless steel oval railing for stairs to flybridge
  • Sliding hatch to flybridge at top of steps
  • Refrigerator built into the aft deck table base.
  • Day head with sink and vanity
  • Storage cabinet
  • Overhead LED lighting
  • Blue LED courtesy lighting
  • Remote camera monitoring system – streaming to pilothouse & fly bridge Garmin multi-function displays
  • Port & starboard engine & thruster control stations

 

Side Decks, Portuguese Bridge and Foredeck:

  • Covered recessed walkways with teak and non-skid decking
  • Fuel inlets & vents built into the house sides for safe fueling
  • Engine room air-plenums built-in to the inside walkway bulwarks
  • Starboard side of the pilothouse: (2) 250V/50A & (1) 125V/30A power inlets
  • Port & Starboard side boarding gates for high docks
  • Stainless steel oval hand rails
  • Blue LED courtesy lighting
  • Overhead LED lighting
  • Over-sized hawse holes with tie down cleats
  • Storage below pilothouse forward windows
  • Storage on inside of Portuguese bridge
  • Double opening to fore deck
  • Built-in seating with cushions
  • Maxwell windlass dual anchors and 300’ chain each
  • Raw & freshwater foredeck wash down systems
  • Stainless steel anchor roller, stanchions, cleats, chocks and oval hand rails.

  

The Sky Lounge on the E720 is very spacious and can be used as a second informal salon. The expansive space offers plenty area for guests to relax when you are cruising.It is equipped with a large pop up TV, day head, refrigeration for drink storage and great sight lines for the visual joy of the cruise.  You will find plenty of storage under the seats, in the cabinets and in the aft deck bar/ BBQ area.  The Sky Lounge can be accessed either from the aft deck molded in teak covered stairs or via the inside stairs from the pilothouse.  The Sky Lounge offers a centered helm station with Garmin 8000 series navigational equipment, 3 X Llebroc power  helm chairs, as well as a very large cruising settee with table.  There is plenty of room aft of the enclosed Sky Lounge on the boat deck for your tender and toys. It is equipped with a 1600 lb. Brower Davit system with a remote control . 

Sky Lounge & Boat Deck:  

  • Hardtop with LED lighting & three (3) skylights  hatches w/screens and night shades.
  • Frameless window enclosure with sliding stainless steel door to boat deck
  • Samsung 40” LCD TV with electric lift
  • Two (2) Llebroc electric helm seats
  • Cherry and holly flooring
  • Large folding dining table with built-in U-shaped cruising settee
  • Center-line station with complete engine & navigation instrumentation
  • Garmin 8000 Series touch screen navigational equipment
  • Day head
  • Stairway starboard side leading to the country kitchen and formal dinning area and wet bar.
  • Stairway aft Portside leading to the aft deck
  • The aft deck holds the food & beverage service center with U-line refrigerator/ice maker, hot & cold pressure water, SS sink & propane BBQ
  • Brower 1600 lb. low profile power rotation davit 
  • Room for up to a 15' tender and your toys
  • Nonskid decking
  • Oval safety hand rails 
  • Stainless folding ladder for access to the top of hardtop.
  • A water tight starboard side door for access to the upper Portuguese bridge forward.
  • Aft control stations port & starboard for the engines and hydraulic thruster controls.
  • A convertible forward or aft facing seat with table. 

 

Accommodations aboard the E720 begin with a well-designed and executed 3 stateroom, 3 head arrangement plus crew accommodations aft with head and shower and small galley area. The entire yacht is build of  handcrafted cherry cabinets in a traditional satin finished "raised panel style" with "booked matched" accents.

The "Full Beam Owners stateroom" is located midships and features a "King" size bed with custom mattress, a walk-in closet, two additional hanging lockers, an ensuite head with granite counters and heated granite floors. The floors can be heated by the hydronic heating system A large quiet flush Techma head  and a large walk-in shower finish off the elegant large master head. A built in dressing table is to port and several cabinets for storage are built in to port. The King size bed is equipped with night stands, mirrored head board and large built in drawers. A large screen T.V., built in stereo ,DVD player and anchor watch depth finder finish off the space. 

Master Stateroom:

  • Full Beam  Master stateroom with king sized walk around bed
  • Walk-in cedar lined closet
  • (2) additional clothes lockers
  • Make-up vanity with mirror
  • Port & starboard custom portlights
  • Samsung 40” LED TV with a 12V stereo surround sound system and DVD
  • Abundant storage drawers
  • Custom designed headliner with indirect lighting
  • LED lighting
  • Italian stainless steel light fixtures and door hardware

Ensuite Head:

  • Marble countertop
  • Heated marble floor
  • Tecma quiet flush toilet
  • LED task lighting
  • Large stall shower with a massage tower system
  • Vanity with storage and under counter sink
  • Full width mirror above the vanity
  • Medicine cabinet

 

VIP Stateroom:

  • Queen size bed
  • Over head hatch with Ocean-Air screen system
  • Samsung 32” LCD TV w/ 12V AM/FM Stereo, DVD system
  • Private access to the forward head
  • Hanging lockers
  • Drawer storage
  • Custom mattress & bedding
  • LED task & reading lights
  • Italian door hardware

 

VIP Ensuite Head:

  • Marble countertop
  • Heated marble floor
  • Tecma quiet flush toilet
  • LED task lighting, stall shower
  • Vanity cabinet with storage and mirror above
  • Portlight with screen
  • Stall shower

 

Port Ensuite Guest Stateroom:

  • Double bed
  • Storage drawers
  • LED task & reading lights
  • Samsung 22” LCD Monitor w/ 12V AM/FM Stereo, DVD system
  • Cedar lined hanging locker

 

Guest Ensuite Head:

  • Marble countertop
  • Heated marble floor
  • Tecma quiet flush toilet
  • LED task lighting, stall shower
  • Vanity cabinet with storage and mirror above
  • Portlight with screen
  • Stall shower

 

Salon:

  • Custom interior designed by Pacific Custom Interiors
  • Custom sofa with storage below
  • Three (3) free standing chairs
  • Cherry end tables
  • Boxed windows with Hunter-Douglas blinds
  • Samsung 46" LED TV, Bose Life 38 Surround Sound System
  • LED lighting w/dimmers
  • Custom ceiling with indirect LED lighting
  • Carpeted flooring

 

Formal Dining & Country Kitchen:

  • Granite countertop
  • Over-sized stainless steel sink with single lever Grohe faucet
  • Heated granite flooring
  • Abundant cabinet & drawer storage
  • Italian drawer hardware
  • LED task lighting
  • Numerous 110V AC receptacles
  • Sub-Zero refrigerator/freezer drawers (three)
  • Fisher-Paykel dishwasher
  • GE Profile Ceramic Four (4) burner cooktop, Induction style.
  • GE Profile Oven
  • GE Profile Convection microwave oven
  • Cooking venting system
  • New style Broan trash compacter
  • In-sinkerator Garbage disposal
  • Walk behind bar w/ two bar stools
  • Wine Locker
  • Ice maker
  • Dining table for eight.
  • Pre-wired for additional overhead lights over table
  • Cherry and Holly flooring

The aft guest quarters/crew area can be accessed through either the main salon or from the transom watertight stainless steel door.  The area offers the guest stateroom with a double and single bed, a head with stall shower, a work bench, storage and walk-in access to the engine room.

Aft Stateroom / Crew Quarters:

  • Guest stateroom with over / under bunks
  • Hanging locker
  • Drawer storage
  • LED TV
  • Stereo/DVD player
  • Stainless steel portlight
  • Satin finished handcrafted raised panel cherry cabinetry
  • Head with stall shower
  • Cherry & holly flooring
  • Solid surface counter with sink, storage & refrigerator
  • Abundance of bulk storage
  • Stairway leading to/from the main salon
  • Access to the transom via aircraft style bulkhead door

The propulsion power for the E720 is provided by a pair of Caterpillar C18 1136HP diesel engines that are coupled to ZF transmissions that are housed in a full stand up engine room.  The vessel is also equipped with ABT Zero Speed  stabilizer system and ABT hydraulic bow & stern thrusters.

Mechanical:

  • Twin Caterpillar C18 1136HP common rail diesel engines
  • Electronic engine monitoring system
  • Five (5) Station electronic engine controls
  • ZF transmissions
  • Aquamet 3 1/4' stainless steel propeller shafts
  • 4 Bladed propellers
  • ABT Zero Speed stabilizer system
  • ABT 33HP hydraulic bow & stern thrusters
  • Racor dual crossover fuel/water filtration filters for main engines
  • Racor fuel/water filtration filters for generators
  • Head-Hunter freshwater system
  • 12VDC Raw & freshwater deck wash down systems, both (fore & aft)
  • Engine driven emergency engine room bilge pumping system
  • Fuel management system & 1 1/2" cross flow fuel connections between tanks
  • Athwart ships center-line fuel tanks
  • Oil change system-12VDC
  • Brower 1600 lb. power rotation davit
  • Air-Conditioning, two compressor chilled water system
  • Hydronic hot water diesel heating system
  • Heated galley & head floors from the Olympic diesel heating system
  • Hydraulic power steering system
  • Aircraft style pilothouse & transom safety doors
  • KVH TracVision HD& satellite TV receiving system
  • Holding tank with deck & overboard discharge systems
  • (4) 2000 GPH automatic bilge pumps
  • Stand up engine head room
  • Automatic air-plenum shut down system
  • Automatic fire suppression system

 

The E720 electrical systems are 250/125V/50A & 24/12VDC.  Power is supplied by either the dual aft GlenDenning Cable master systems, the Starboard dual 50A or 30A power inlets, the dual Onan generators or from the MagnaSine 4kw inverter/charger.  All of the incoming electrical power is managed through the vessels AC/DC distribution panels that are located in the pilothouse.

Electrical:

  • Dual Glendenning cable master systems w/75' power cords
  • Dual C-Charles IsoBoost transformers
  • (2) C-Charles 50A battery chargers
  • (1) C-Charles 30A amp battery charger 
  • AGM batteries - House/Inverter, engines & generator
  • Onan 29kw & 17kw generators
  • Magnasine 4kw inverter/charger
  • (2) Starboard side 250/125V/50A power inlets
  • (1) 125V/30A starboard side power inlet
  • Aft & Midships high water bilge alarm with monitors at pilothouse & fly bridge
  • Phone & cable inlets
  • GFCI protected outlets
  • LED interior/exterior lighting
  • Indirect LED lighting in select areas
  • Reverse cycle air-conditioning system
  • Flat screen LED TV's
  • AC & DC stereo systems

 

Custom Upgrades and Options:

  • Satin finish matched cherry raised panel interior
  • Three stateroom with three heads forward
  • Bow docking lights with remote control
  • Central Vacuum with 5 outlets
  • Deck wash down
  • Engine room forward bulkhead one extra layer of sound proof insulation
  • Engine controls at aft deck port & starboard
  • Engine controls port and starboard on upper Portuguese Bridge
  • Engine oil change system
  • Fly bridge sink
  • Forward deck sunbathing cushions
  • Intercom – 6 outlets (pre-wire only)
  • Underwater exhaust
  • Refrigerator w/ ice maker for fly bridge
  • Melia expresso Coffee machine
  • GE washer/dryer
  • Custom redwood burl inlays and table tops
  • Special ceiling treatments for salon and master stateroom
  • Sky lounge A/C system
  • Engine room A/C unit
  • Second back-up hydraulic pump for power steering
  • Camera monitoring system (2 cameras – no LCD screens)
  • Curtain box for aircraft style doors
  • Engine room vent auto shut off system
  • Fly bridge propane BBQ w/ propane tanks
  • Iso boost transformer (2)
  • Kevlar in hull lamination
  • New ceiling treatment for all heads
  • Pre-wire for Panasonic phone system
  • Teak steps from aft deck to fly bridge
  • Granite galley countertops
  • Additional GFI outlets in galley & fly bridge
  • Back up sea water pump for A/C system
  • Pre-plumb for water maker
  • Pre-wire for microwave in crew quarter.
  • Maxwell 3500 dual gypsy horizontal windlass w 300' of chain on each side.
  • Sound Down white powder coated panels for engine room.
  • Bookcase in master.
  • Wood landing at bottom of stair and around compass rose.
  • Wood landing for forward VIP stateroom.
  • Wood landing for port guest stateroom.
  • Wood landing in front of washer and dryer.
  • 3 ea.Garmin 8000 series 17” touch screen monitors, HD radar w/ open array antennae, chart plotting, AIS, autopilot, depth, speed, temp, GPS receivers, VHF radio, compass
  • Opening windows for side and aft sky lounge area
  • Plumbed and wired for a Water maker 
Hampton Yacht Group

Hampton Yacht Group

    ⋮      206.623.5200
  info@hamptonyachtgroup.com
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