There are two types: Dive Operators. There are two types of Dive Operators: large and small. Small Dive Operators typically have eight divers on a boat smaller than an SUV that is mid-sized. Big Dive Operations, on the other hand, may have up to thirty divers on one boat. In general, large boats are faster but they have few amenities like a head and shade. Depending on the dive instructor you might not be able secure the space to store your camera.