Not sure what you're getting at.
Regardless, the dive sites of Cozumel are basically in a sheltered bathtub like waters on the leeward side of the island. The conditions typically are as far from challenging as you can get.
Overloading? Very poor captain skills? Poor maintenance? Unsafe boat? Something beyond the routine process of a dive boat using reverse is the catalyst for Cozumel's newest wreck dive.
I am contradicting your previous post.
The conditions were not as you are assuming. They were not typical conditions as previous posts have stated and from my experience the previous week or the two days following. I attribute the failure, based on the accounts told to me and supplemented by personal observation of the techniques used, to poor seamanship in maintaining stern way in higher than normal seas. Some mechanical failure could have contributed (issues with one or more scuppers? Bilge pump?) but those would be contributing only, not primary causal.