Choosing the right size (Horsepower)

• Suitability for use
  If you want to potter around the estuary in a small boat then you can choose the minimum size of engine recommended by your boat manufacturer. If you want the boat to 'plane'(skim along the surface at close to horizontal aspect) then you will need more power so you will need at least 6hp, even for an inflatable and of course more for a traditional fiberglass boat. If you want to waterski then you will need to get over 20 mph and will need at least 25hp, even in a relatively lightweight boat.
• Suitability for your boat
  Usually you will have a range of size choices for your boat up to a maximum that is dictated by weight. If you are buying a Zodiac, Bonwitco or Walker Bay boat for example we indicate the range of sizes you can consider.
• Ability to carry
  Outboard engines are awkward to carry and you probably won't want to carry anything above 10hp on your own and even a 4hp engine starts to weigh heavy if you have a bad back or have to go up steps or any distance to your car on your own. Remember that for any given horsepower 4 stroke engines are usually a lot heavier than 2 stroke.
• Ability to transport
  This of course depends on the size of your car boot but a mid size car will probably take up to 15hp and an estate car might take up to 40hp, although handling such a heavy engine will make it awkward. Remember that 4 stroke engines can only be laid down one way, otherwise the oil will empty from the sump with potentially disastrous consequences all round!