Outboard Motor Buying Guide

Picking an outboard comes down to four things: horsepower, shaft length, control type, and rotation. Get these right and the motor bolts on and runs like the boat was built for it.

1. Horsepower — match it to your hull

Never exceed the max HP on your transom's capacity plate — it's a Coast Guard rating. Most boaters are happiest near the max for hole-shot and load-carrying.

• 🛶 2.5–9.9 HP — dinghies, tenders, canoes, small jons, sailboat kickers.
• 🎣 15–60 HP — aluminum fishing boats, small skiffs, inflatables.
• ⛵ 90–150 HP — pontoons, bay boats, deck boats, bass boats.
• 🌊 200–450 HP — offshore center consoles, often twins, triples or quads.

2. Shaft length — measure your transom

Measure from the top of the transom straight down to the bottom of the hull. The anti-ventilation plate should sit roughly even with the keel.

• 15" Short — transom height ~15". Small tenders & jons.
• 20" Long — ~20". The most common size by far.
• 25" X-Long — ~25". Larger hulls, offshore boats.
• 30"+ XX-Long — tall offshore transoms, bracket setups.

⚠️ Wrong shaft length is the #1 fitment mistake. Too short = ventilation & overheating; too long = drag & spray. When unsure, call 1-800-OUTBOARD.

3. Controls — tiller, remote, or digital

Tiller steers right at the motor — perfect for small boats. Remote uses a wheel and binnacle at the helm. Digital / fly-by-wire (DTS, DEC) gives the smoothest shifting and is standard on premium offshore motors.

4. Rotation — standard vs counter

Single-engine boats run standard rotation. On twin and multi-engine rigs you pair a standard with a counter-rotating motor so the props cancel out steering torque.

What about electric?

Brands like Torqeedo offer quiet, zero-emission electric outboards — ideal for no-wake lakes, sailboats and tenders. We list HP-equivalent ratings so you can compare them directly to gas motors.