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HH 55

HH 55 is a Fast cruising catamaran built by HH Catamarans and designed by Morrelli & Melvin. Her first hull was built in 2017 and a Fore beam stepped mast mast configuration.

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HH 55 Sailboat Specifications​


Overall Length (LOA) m / ft16.74 m / 54.92 ft
Builder(s)HH Catamarans
Designer(s)Morrelli & Melvin
categoryFast cruising catamaran
Hull TypeCatamaran
First Hull Built2017
Last Hull BuiltStill in production
AppendagesFoils twin C foils
HelmTwin helm wheels
RudderTwin spade rudders
CockpitOpen aft cockpit
Rigging TypeSloop Marconi (square top mainsail) fractional
Mast LayoutFore beam stepped mast
Freshwater Tank Capacity lt/gal401 L / 106 gal


Overall Length (LOA) 16.74 m / 54.92 ft
Hull Length16.74 m / 54.11 ft
Waterline Length (LWL)16.21 m / 53.2 ft
Beam (width)8.1 m / 26.7 ft
Waterline Beam Width1.68 m / 5.6 ft
Draft3.3 m / 10.10 ft
Light Displacement (MLC) 14200 kg / 31306 lb
Maximum Displacement19633 kg / 43283 lb


Displacement-Length Ratio (DLR)94
Sail Area to Displacement33.37
Upwind Sail Area to Displacement32.71 m²/T / 352 ft²/T
Downwind Sail Area to Displacement53.48 m²/T / 576 ft²/T

Above Deck

Mast LayoutFore beam stepped mast
Mast Height from DWL26.9 m / 88.4 ft
Rotating SparsYes
Number of Levels of Spreaders1
Spreaders AngleSwept-back (diamond)
Spars ConstructionCarbon fiber spars
Standing RiggingCarbon fiber discontinuous
Reported Sail Area191.66 m² / 2063.00 ft²
Upwind Sail Area191.8 m² / 2065 ft²
Downwind Sail Area313.6 m² / 3376 ft²
Mainsail Area124.8 m² / 1343 ft²

Engine Room

Engine(s)2 inboard engines
Fuel typeDiesel
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