Double Eagle Notes
The speeds listed below are approximate and not guaranteed.
They are based on the listed displacement and may vary if
displacement (weight) varies. All speeds assume well-faired
hulls driving through properly sized propellers with suitable
gearing to match the power and torque curves of the engine in
question. All speeds are in knots per hour. To convert to
miles per hour, divide by .87. Horsepower is given as
constant 24-hour rated SHAFT HORSEPOWER (SHP); NOT brake
horsepower (BHP), nor intermittent ratings. If only BHP is
known, multiply this figure by .70 for approximate constant
SHP. Figures assume S.A.E. methods. If ratings given in
D.I.N., these will be about 8% less than S.A.E. If ratings
given in KW, this will give ratings about 75% of BHP (S.A.E.)
ratings. In all cases, it makes no difference if the engine
is diesel or gasoline powered.
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6 knots
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10 SHP
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9 knots
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25 SHP
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13 knots
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40 SHP
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18 knots
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70 SHP
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22 knots
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105 SHP
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27 knots (*)
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150 SHP
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31 knots (*)
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200 SHP
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(*) Attempting to obtain these speeds with the Inboard
Version, due to the deep skeg, may cause excessive fuel
consumption and may not be practical.
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A local builder of the aluminum version is running at 40 mph
with a 200 hp outboard.
Pounds per inch of immersion (ppi):
617 lbs. will sink the hull an additional 1".
Prismatic coefficient: 74%
Misc Hardware-Inboard
The following to be used with an inboard marine motor. See
our on-line Inboard Hardware Catalog for
descriptions.
Link to Inboard Hardware Catalog will open
in a new window; close window to return to this
page
Price current: 10-26-2010
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Rudder Hardware
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Rudder
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92-300
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$671.15
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Rudder Skeg Bar
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92-600
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$386.71
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Tiller
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90-028
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$43.00
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Rudder Post Bracket
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90-032
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$76.50
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Rudder Stuffing Box
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90-112
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$77.10
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Rudder Stuffing Box Plate
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90-107
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$25.00
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Controls
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Single Lever Shift Control
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91-214
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$420.00
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Cable 33C-two required
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90-160 (verify length)
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$143.00 each
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