CORRECTION! Fever Mike, This is not my hull nor do I build boats anymore...Originally posted by Fever Mike
GLH, thanks for the pictures of Sharkey's hull I have not seen those before.
This is from a local builder here in Jersey trying something on his own.
Pretty much this boat was designed for the bay. 32' long 7' beam. low profile and under 2000 pounds.
Yes those vents in the bow ventilate the bottom as well as add positive pressure to the engine compartment.
In case of a stuff, there is very little glass there and if it were bad enough, the inside of the ducts would just blow out. If it wasn't so bad, the water would then flow through the vents out the step.
The picture below shows how the air is channeled through a tube in the bottom of the hull. Also look at the top of the bulkhead and you can see the other tube forcing air to the cockpit and engine compartment.