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Hallberg-Rassy 312 MkII

The Hallberg-Rassy 312 MkII is a 30’11” monohull sailboat designed by Christoph Rassy and Olle Enderlein. She was built by Hallberg-Rassy (Sweden) and made of monolithic fiberglass / polyester. This sailboat was produced between 1986 and 1993 with 205 hulls completed.
Hallberg-Rassy 312 MkII Hallberg-Rassy 312 MkII layoutHallberg-Rassy 312 MkII layoutHallberg-Rassy 312 MkII sailingHallberg-Rassy 312 MkII sailingHallberg-Rassy 312 MkII sailingHallberg-Rassy 312 MkII sailingHallberg-Rassy 312 MkII sailingHallberg-Rassy 312 MkII accommodationsHallberg-Rassy 312 MkII accommodationsHallberg-Rassy 312 MkII accommodationsHallberg-Rassy 312 MkII accommodations
Hallberg-Rassy 312 MkII's   Main Features
Model Hallberg-Rassy 312 MkII
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Christoph Rassy
Olle Enderlein
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich fiberglass / polyester
First built hull 1986
Last built hull 1993
Number of hulls built 205
Appendages Keel :
Fin without bulb
Helm 1 wheel
Rudder 1 semi-spade rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
Standard public price ex. VAT (indicative only) N/A
Hallberg-Rassy 312 MkII's   Main dimensions
Hull length 30’ 11”
Waterline length 25’ 4”
Beam (width) 10’ 1”
Draft 5’ 4”
Mast height from DWL 45’
Light displacement 10803 lbs
Ballast weight 4850 lbs
Ballast type Cast iron
Hallberg-Rassy 312 MkII's   Rig and sails
Upwind sail area 603 sq.ft
Mainsail area 237 sq.ft
Genoa area 366 sq.ft
Solent area 280 sq.ft
Jib area 199 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back
Hallberg-Rassy 312 MkII's   Performances
Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
19.41
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
304
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
45 %
Hull speediAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
6.74 knots
Hallberg-Rassy 312 MkII's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 28 HP
Fuel type Diesel
Fuel tank capacity 29.1 gal
Hallberg-Rassy 312 MkII's   Accommodation
Cabin(s) 1
Berth(s) (min/max) 4 / 5
Head(s) 1
Fresh water tank capacity 31.7 gal
Fridge/ice-box capacity 21.1 gal
Maximum headroom 6’ 1”
Head headroom 5’ 11”
Hallberg-Rassy 312 MkII's   Fore cabin
Berth length 6’ 5”
Hallberg-Rassy 312 MkII's   Aft cabin
Berth length 6’ 7”

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