The base sets I was referring to were the ones in the vehicles (2 x Icom IC2100) the two in the house (IC-2000 and a *spit* Alinco which is about as much use as a chocolate fireguard) and the one at work (an IC-229) which all have about the same sensitivity but of course are not waterproof ones they are just regular ham sets - to be honest I haven't really used the one on the rib and now it has no antenna so I can't, but that is an Icom IC-402 (I think!) its waterproof anyway but I'm not sure about the mike on that. Likewise my other two handhelds an Alinco DJ195 and a Yaesu VX-150 are just ham sets and not waterproof.
Peter was going to get somebody to test it for him I think so may be in touch with you in due course - but sometimes it worked with me but definitely on one occasions it wasn't putting anything out to somebody about a mile away line of sight. I'm happier with a different set as it is mainly going to be carried for safety and I want it to work if I fall in the drink
No real drama I am sure the replacement will be 100% just like my Yaesu 2m handheld has been. Everything else about the set is great, clear display, very loud and clear audio much better than the 2m handhelds which is exactly what is needed on a rib, feels very solid, and very fast scan speed too.
Hadn't thought of the mike design helping with wind noise but that will also be an advantage on a rib - I just need to remember to cancel 20 years of habit and jam my face into the thing so folks can hear me