VHF recommendations

Hi folks,

I'm in the market for a VHF radio having recently completed the RYA
short-range course.

I'd like a handheld unit that is:

Waterproof (1m/30 mins is fine)
Has built in DSC
Has reasonable battery life
Has 5 watt max power

Whilst this would be used for RIB diving, I also want something I can use
for my other sea-based sports (kayaking and rowing), so versatility is the
order of the day.

I've had a look at a number of online chandlers, but unless I've missed the
trick, nobody seems to be peddling the handheld VHFs with cut-down DSC
capabilities that we were told about during the RYA course. I'm coming to
the conclusions that these aren't on the market yet, is this right?

Any recommendations/comments much appreciated.

Thanks,

Andy