What is this?

[DieselCamel]

Anyone know what these are? Hydrofoils? Pic taken on the canal we're staying on in bimini

 

[McMark]

Yes. Hydrofoils. Helps porpoising. Helps hole shot. Might add 1 or 2 mph. Good for overpowered ass heavy boats mostly.

Can have some negatives like heavy steering.

 

[Devin Jensen]

never seen those, pretty cool though

 

[waterboy]

used to have those on my old I/O. Helped get on plane quicker and stay on plane at a slower speed. Good for tubing at slow speed when kids were little, etc. Simple bolt on and I think the newer ones don't even bolt to the lower unit any more.

Doubt you need them on your boat... Maybe he has them for slow speed trolling ???

 

[Cobra Jet Steering LLC]

The early style were flat these look like they are trying to capture the prop wash maybe for water sports to keep down the wash, I remember building one for a 25 hp Johnson that I had on a 12 foot aluminum boat, the boat was fast but impossible to hold straight the torque would wear your arm out trying to hold it straight at high speed so I built some small fins on the ends and angled them to counter the prop rotation so the engine tracked straight with very little input from the operator.

 

[0627Devildog]

Yes, they are hydrofoils . . . . . . I had them on my Sea-Ray, and they performed as advertised.

http://www.westmarine.com/buy/sport-marine-technologies--se-sport-400-performance-marine-hydrofoils--P014966113

 

[DieselCamel]

Thanks for the responses