In reply to Trangia:
I was listening to this on the radio the other day. Apparently Beatty's crews hadn't been able to have much practice at gunnery (not sure why) and so had adopted several unsafe measures to make up for their slow rate of firing, including leaving flash doors open and leaving cordite fuses where they could be retrieved quickly but were exposed to flash... which is why the ships exploded so quickly.
There must have been some unimaginably horrible ways to die on those boats.