IMPULSE 21 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of IMPULSE 21. Built by Johnson Boat Works (USA) and designed by William Cook, the boat was first built in 1986. It has a hull type of Fin w/spade rudder and LOA is 6.4. Its sail area/displacement ratio 28.00. Its auxiliary power tank, manufactured by undefined, runs on undefined.

IMPULSE 21 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about IMPULSE 21 and decide if it is a fit for your boating needs.

Boat Information

Boat Specifications

LOA:6.4 m / 21.00 ft
Rigging Type:Fractional Sloop
Hull Type:Fin w/spade rudder
S.A. (reported):19.32 m2 / 207.96 ft2
Draft (max):0.99 m / 3.25 ft
Displacement:590 kg / 1300.73 lbs
Ballast:272 kg / 599.66 lbs
# Built:150
Designers:William Cook
LWL:5.64 m / 18.50 ft

Sail Boat Calculation

Comfort Ratio:6.54
Capsize Screening Formula:2.93

Rig And Sail Specs

I:7.04 m / 23.10 ft
SPL/TPS:7.92 m / 25.98 ft
E:2.96 m / 9.71 ft
SPL/TPS:2.44 m / 8.01 ft
ISP:7.16 m / 23.49 ft
S.A. Fore:7.51 m2 / 80.84 ft2


Builders:Johnson Boat Works (USA)
Designers:William Cook


Who designed the IMPULSE 21?

IMPULSE 21 was designed by William Cook.

Who builds IMPULSE 21?

IMPULSE 21 is built by Johnson Boat Works (USA).

When was IMPULSE 21 first built?

IMPULSE 21 was first built in 1986.

How long is IMPULSE 21?

IMPULSE 21 is 5.64 m in length.

What is mast height on IMPULSE 21?

IMPULSE 21 has a mast height of 7.92 m.

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