johndiver999
Contributor
The key out and engine off is a bit much. That is almostI can understand when boat operators say they MUST run the prop while divers are in the water, i.e. to pick them up during drift dives or whatnot. I just don't think there's any valid reason for civilian recreational divers (we're not SEALs deploying from a RIB at high speed) to be mixed up with props.
In places that do lots of drift dives, as I said, sure, the boat ops have a point of some kind. Up in the Northeast US, in the 80's there was a lot of discussion about this, with the boat operators agreeing that since they usually anchored for the dive (bugs or wrecks) it was safest to physically remove the engine key and either stow it, or have a diver take it down--to make Real Damn Sure the engines weren't started when divers were in the water. (With the emergency spare literally kept in a "break in case of emergency" case on the boat.)
That was after a dive instructor was seriously maimed by a prop accident, prompting a lot of discussion.
I can see the OP would have some haziness about memory after a head trauma that probably includes concussion. But with her experience, I find it hard to think she would go into the water while the engine was running and the boat moving. More likely the operator had it in neutral when he signaled her in--when it should have been off.
A lawyer and some fact finding are needed. In the US, that operator would lose his captain's license at least, for negligent operation. A prop versus a skull...no thanks, I want the engine off and the key out.
Like demanding that the bus or taxi driver shut the vehicle down and show you the key before you exit the vehicle. It is not practical.
Similar situation for a boat. If a diver exits the boat and experiences a problem or becomes incapacitated etc. it may be necessary for the operator to maneuver the boat to effect a rescue or avoid diver injury. For example a diver could be on the surface and the boat could be blowing into them.
So the back roll timing should normally be done when the boat is still moving slowly and is out of gear. This requires good coordination between the divers and operator.
Waiting until a boat comes to a complete stop before rolling is sometimes impractical in certain situations.