Technical resources guide

Shaft Length Guide

Selecting the correct model for your boat is the first step, then shaft length and power are the next two critical factors to ensure you get the best performance out of your Haswing trolling motor.

Shaft length is particularly important for bow mount models such as the Cayman series, as bow deck to water height varies depending on the type of boat you will be mounting the motor on. Obviously on a low-sided open fishing boat that distance will be less than a 7.0M deep-V ocean going fishing boat.

A reliable benchmark is to measure the distance from the front of the bow deck where the motor will be positioned to the waterline, then add 500mm in order to ascertain the correct or even minimum shaft length. Though if you regularly fish in rough water, you could add another 125mm to that overall shaft length to account for the boat bobbing up and down in the rough water. You of course can adjust the required shaft length to suit the conditions by adjusting the ‘height collar’ on the shaft. Better to have extra length available when needed than insufficient.         

  Bow Mount Guide

  Transom Mount Guide


REMEMBER -  there should be at least 300mm (12”) from the waterline to the top of the motor under the water to prevent cavitation in choppy conditions.

If you are trying to decide between two lengths, always select the longer one, as you can adjust the height using the ‘height adjustment collar’ on the motor.

Shaft lengths - which is right for your boat?

Bow to waterline

0-254mm (10”)                    

254-380mm (10”-15”)            

380-508mm (15”-20”)            

508-625mm (20”-25”)            

Recommended Shaft Length (minimum)

760mm (30”)

915mm (36”)

1066mm (42”)

1218mm (48”)

Bow to waterline

0-254mm (10”)                    

254-560mm (16”-22”)            

560-760mm (22”-30”)            

760mm +  (60” +)     


Recommended Shaft Length (minimum)

915mm (36”)

1070mm (42”)

11220-1370mm (48”-54”)

1370-1524 (54”-60”)

2020 Copyright © All rights reserved. Created by Genius Design

Haswing Home Page Cayman B GPS bundle offer  Cayman B GPS Cayman B
Home Motor Range Batteries Cabling Chargers Accessories Motor Guidelines Kayaks User Comments Dealer Locator Contact Us