Wave Engines Pty Ltd

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HP Finder Tool

Find the Right Outboard Motor for Your Boat

Answer a few quick questions about your boat and we'll recommend the right horsepower, shaft length and control type before you buy.

How long is your boat?
This is the single biggest factor in choosing the right horsepower.
Under 2.5m
Tender / inflatable
2.5m – 3.5m
Small dinghy
3.5m – 4.5m
Tinny / punt
4.5m – 5.5m
Aluminium runabout
5.5m – 6.5m
Centre console
6.5m+
Offshore / large vessel
What will you mainly use it for?
This helps us fine-tune the recommendation within your size range.
Recreational Fishing
Day trips, estuaries, bays
Offshore Fishing
Open water, longer runs
Family Day Boat
Cruising, watersports
Tender / Dinghy
Getting to and from shore
Sailing Auxiliary
Backup power for a yacht
Repower
Replacing an existing motor
What's your transom depth?
Measure from the top of the transom straight down to the bottom of the hull. Not sure? Choose "Not Sure" and we'll flag it for confirmation.
Short
15" / 381mm
Long
20" / 508mm
Extra Long
25" / 635mm
Not Sure
We'll help confirm this
Tiller or remote control?
This depends on your boat's helm position and rigging.
Tiller
Steer from the motor
Remote
Steer from a forward helm
Not Sure
We'll help confirm this
Your Recommended Range
Based on your boat and how you use it
Shaft Length
Control Type
Best Suited To
Before you order: this tool gives a general recommendation based on common setups. Maximum horsepower, shaft length and rigging requirements vary by individual boat, so we always recommend confirming the exact specification with our team — especially for transom depth and control type — before you purchase.
Avoid Costly Mistakes
Getting horsepower or shaft length wrong is expensive to fix after fitting. A few minutes here can save you a return or re-rig.
Backed by Real Advice
This tool is a starting point — every recommendation can be confirmed with our team before you buy.
No Pressure, No Sign-Up
Use it as many times as you like — no account or contact details required to see your result.

Not Sure Even After This?

Send us your boat's make, length and transom depth and we'll confirm the right motor.