Are the engines going to be in the water? If so, you may want to put them all the way under instead of sticking half way out. The force of the water entering the engines would rip them apart.
yeh the plane is just there to represent water lol
and the boat is stationarry in the pic its just waiting for the driver
and i got a bit mode of an update its basically designed so that the engines point down into the water when its in motion and control surface asn the rear engines keet it in balance
just one tips about the current presentation, you got too many spot light for this scene, it make the f1 too bright I think. With a better lighting setup the presentation would be very good and would make it look even better.
Keep it up! You have a lot of chance in manking the top 3 if you keep adding detail