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Hallberg-Rassy 35 Rasmus Ketch

Sailboat specifications

The Hallberg-Rassy 35 Rasmus is a 34’5” (10.5m) cruising sailboat designed by Olle Enderlein (Sweden). She was built between 1967 and 1978 by Hallberg-Rassy (Sweden) with 760 hulls completed. The Ketch version displays a divided sail plan guarantying less effort and better balance adjustment.

The Hallberg-Rassy 35 Rasmus is as well listed, on Boat-Specs.com, in Sloop version (see all the versions compared).

Hallberg-Rassy 35 Rasmus's main features

Model
Hallberg-Rassy 35 Rasmus
Version
Ketch
Hull type
Monohull
Category
Offshore cruising sailboat
Sailboat builder
Sailboat designer
Country
Sweden
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Single skin fiberglass polyester
Number of hulls built
760
First built hull
1967
Last built hull
1978
Appendages
Keel : swing keel
Helm
Single helm wheel
Rudder
Single rudder on skeg
Unsinkable
No
Trailerable
No
Standard public price ex. VAT (indicative only)
N/A

Hallberg-Rassy 35 Rasmus's main dimensions

Hull length
34’ 5”10.5 m
Waterline length
27’ 7”8.4 m
Beam (width)
10’3.05 m
Draft
4’ 4”1.3 m
Light displacement (MLC)
12125 lb5500 kg
Ballast weight
5512 lb2500 kg
Ballast type
Steel incapsulated in deep GRP bilge

Hallberg-Rassy 35 Rasmus's rig and sails

Upwind sail area
665 ft²61.8 m²
Mainsail area
244 ft²22.7 m²
Mizzen sail area
71 ft²6.6 m²
Genoa area
350 ft²32.5 m²
Jib area
240 ft²22.3 m²
Rigging type
Ketch Marconi masthead
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
0 °
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous

Hallberg-Rassy 35 Rasmus's performances

Upwind sail area to displacement
 iThe 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 25 it indicates a fast sailboat.
213 ft²/T19.83 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The 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.
263
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
45 %
Critical hull speed
 iAs 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.
7.03 knots

Hallberg-Rassy 35 Rasmus's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
45 HP
Fuel type
Diesel
Fuel tank capacity
74 gal280 liters

Hallberg-Rassy 35 Rasmus's accommodations and layout

Cockpit
Center cockpit
Cabin(s)
2
Berth(s) (min./max.)
4 / 6
Head(s)
1
Freshwater tank capacity
74 gal280 liters
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Sailboats
First built hull
Hull length
Hallberg-Rassy 33 Mistral (Hallberg-Rassy)
1966
33’ 5”10.18 m
Hallberg-Rassy 34 Shoal draft (Hallberg-Rassy)
1990
33’ 8”10.28 m
Hallberg-Rassy 35 Rasmus Sloop (Hallberg-Rassy)
1967
34’ 5”10.5 m
Longbow Ketch (Westerly)
1971
31’ 2”9.5 m
Renown Ketch (Westerly)
1972
31’ 2”9.5 m
Sealord 39 Ketch (Westerly)
1983
38’ 6”11.73 m
Albin Ballad (Albin Marine)
1971
30’9.14 m
Albin Singoalla (Albin Marine)
1970
33’ 8”10.26 m
Moody 36 - Primrose (Moody)
1977
36’10.97 m
Attalia 32 Deep draft (Jeanneau)
1983
30’ 2”9.2 m
Melody Standard (Jeanneau)
1976
33’ 7”10.25 m
Nauticat 33 (Siltala Yachts)
1967
33’ 1”10.1 m
Hallberg-Rassy 352 (Hallberg-Rassy)
1978
34’ 7”10.54 m
Kirk (Amel)
1971
35’ 2”10.72 m
Hallberg-Rassy 36 MkII (Hallberg-Rassy)
1994
37’ 1”11.31 m
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