Selecting A Boat That Is Best Suited For Jet Power; Engine Horsepower Selection - Mercury 40 Service Manual

Selecting A Boat That Is
Best Suited For Jet Power
To obtain the best performance from the jet drive, the
boat should have the following features:
1. The boat should be as light as possible.
2. The boat should have hull and transom that is de-
signed for use with a jet drive.
3. The boat should be at least 13 feet in length.

Engine Horsepower Selection

The following table is based on experience obtained with sled-
type boats using outboard jets. The gross weights shown in-
cludes the outboard, boat, people, and all the gear carried. For a
given horsepower loading beyond these weights will give less
than good performance.
220
200
180
160
140
120
HP
100
80
60
40
20
0
500
90-852572R1 JANUARY 1998
6 8 1000 12 14
Engine Horsepower
Selection
A boat operating at slow speed requires considerably
more depth than one which is planing on the surface
of the water. It is important, therefore, to use sufficient
horsepower and not to overload your boat beyond its
ability to plane. See the following table.
16 18 2000 22 24
Gross Weight - Lbs.
26 28 3000 32 34 36
LOWER UNIT - 6D-9