US 46

1968
Designer
William H. Tripp Jr.
Builders
Grampian Marine
US Yachts Inc.
Association
Grampian Owners Marina
# Built
?
Hull Type
Keel/Cbrd.
Construction
FG

Dimensions

Length Overall
45 11 / 14 m
Waterline Length
33 0 / 10.1 m
Beam
12 0 / 3.7 m
Draft
5 1 / 1.6 m 10 4 / 3.2 m
Displacement
25,000 lbs / 11,340 kg
Ballast
9,000 lbs / 4,082 kg (Lead)
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
879 ft2 / 81.7 m2
Total Sail Area
745.9 ft2 / 69.3 m2
Mainsail
Sail Area
348.5 ft2 / 32.4 m2
P
41 0 / 12.5 m
E
16 11 / 5.2 m
Mast Height
?
Foresail
Sail Area
397.5 ft2 / 36.9 m2
I
47 7 / 14.5 m
J
16 8 / 5.1 m
Forestay Length
50 5 / 15.4 m

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
7.7 knots
Sail Area/Displacement
16.45
good performance
Ballast/Displacement
36.0
less stiff, less powerful
Displacement/Length
310.56
heavy
Comfort Ratio
37.97
moderate bluewater cruising boat
Capsize Screening
1.64
better suited for ocean passages

Notes

Probably a stretched versions of the US 41 and from the same mold.
Also sold as the GRAMPIAN 46.
(dimensions from an article that appeared in ‘Motor Boating’, July, 1970)


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