20HP outboard for 4.2M soft inflatable?

[HK_Freedom]

After getting my license half year ago, I have been practicing with a trolling motor, which is very weak and only suitable for very calm weather. Now that I think it's time to buy a outboard to make the boat sime actualy use. I am currently looking at 20HP outboard, as it seems to be of good balance of power and weight for my intended use.

Because I do not have actual experience in outboard motor, I would like to ask if 20HP outboard is sufficient for a 4.2m inflatable boat to be safely cruising along the shore? At the moment I think I do not need super fast operation, just want to make sure if a 20HP outboard is good for mild wind conditions in Victoria.

Currently I am looking at the Tohatsu and Honda 20HP Models. Any insights into these 2 brands for a newbie?

[ango]

20 HP on a 4.2 seems a bit under powered to me, I would be looking at 30 - 40 HP, you will need it if you are not alone.
Cheers
Ango.

[HK_Freedom]

Thank you for the insight. It might sound like a foolish question, just wonder how much difference on the thrust between a 30hp and 40hp in actual operation with 4 people? We are a family of 4

[Mattblack]

What's the maximum rated hp of the boat?

[Seniorfisho]

the boat will have a plate to tell you max HP. A 20hp motor on an inflatble is plenty. Unlike traditional boats, they don't weigh much

[HK_Freedom]

50HP rated power for the boat

What's the maximum rated hp of the boat?

[Mattblack]

50HP rated power for the boat

What's the maximum rated hp of the boat?

50hp sounds fun....I presume you need a short shaft tiller steer? (Best engine is the lightest with the most displacement....best price and warranty help a lot too)

[purple5ive]

4 people with 20hp is not ideal.
Remember that you need the hp if things get real bad on the water.
A small hp outboard will barely be able to plane. Let alone fight against waves.
Tohatsu and Honda are both reputable brands.

[HK_Freedom]

So, is 30HP adequate in that case? Budget and weight are 2 main factors for me at the moment apart from safety. That’s why I originally looked at 20hp options. But it seems to be marginal for my case. Just wonder if 30hp is okay in that case.

4 people with 20hp is not ideal.
Remember that you need the hp if things get real bad on the water.
A small hp outboard will barely be able to plane. Let alone fight against waves.
Tohatsu and Honda are both reputable brands.

[frozenpod]

You will need 30Hp minimum ideally 40Hp.

You wont be able to get on the plane with 20Hp.