Please fill out the following
form and submit it to Martec, so that
we may recommend the best propeller for your specific application.
Your E-mail Address
Engine - Make and model
Horsepower @ max R.P.M.s
Rotation (as viewed
from the stern looking forward)
Manufacturer and Model
Type of propeller interested in
(MKIII Folding, 2 or 3 blade Slipstream stainless steel geared folder, 3-blade S-1 Autostream stainless steel Feathering, or 2-blade fixed)
Current propeller type and size
(fixed/feathering/ folding, diameter & pitch)
In what country was the boat built?
not built in the United States then please determine the following additional
on the shaft
Shaft Nut Threads
Shaft Diameter (please indicate whether in millimeters or inches)
Size of Keyway (please
indicate whether in millimeters or inches)
Fin keel with shaft
& strut installation
Shaft exits directly
Prop is seated in
The amount of clearance from the tip of the blade to the hull should
be 15% of the overall diameter of the blade, i.e., a 15" diameter
prop will require 9-3/4" measurement from the center of the end
of the shaft to the hull.
of one blade: .......7-1/2"
plus 15% of the diameter: 2-1/4"
Distance to hull
(with blades open)
Distance to rudder
(with blades closed) If prop-shaft is offset, distance
to nearest "hard-over" location
Distance to skeg
(arc of blades when opening)
Please Note: Martec
folding propellers will set further aft on the shaft than most fixed
on the "Submit" button below will send to Martec the
information you have provided above.