A six-man raft seems an awfully big one for a 27-footer, and a very nice one at that :-).
That you are new to our forum doesn't mean that you are new to sailing, of course, but you've given us no information about your level of experience or about where you are going to be sailing the
boat, so I'm prompted to ask: Why do you even want to carry a raft?
What, precisely, are the circumstances in which you can envisage yourself leaving the
boat? The only circumstance in which I would leave my 30-footer would be if I had an UNCONTROLABLE fire. In all other circumstances I would, here in the Salish Sea (twixt
Vancouver Island and the
west coast of British Columbia) be better off staying with the boat because a "mayday" on
VHF would bring assistance in a very short time, given the amount of traffic we have, and the ubiquity of well trained and well-organized chapters of the Royal Canadian Search and
Rescue organization.
Consider what risks you as an amateur seafaring man are exposed to:
Being holed by a floating object and sinking as a result of ingress of
water? Most unlikely given sound seamanship in regard to look-out and boat handling. A fracture in a fibreglass
hull or a broken seacock will obviously admit
water, but we all have an established procedure for dealing with such a quantity of water.
Having a
medical emergency? Well, yes, but as
skipper you will have, or should have, a First Aid qualification at some appropriate level and a knowledge of any special
medical requirements your crew may have. In any event, you are unlikely in the UK to be more than a few hours from a useful port and of course you have the
VHF, so something as drastic as an evacuation by helicopter/long-line is eminently possible.
Will "stress of weather" ever put you in a position where you have to leave the boat? Most unlikely! As a sensible
skipper, and never being far from port, you will have taken your boat out of harm's way long before rude Boreas can do you harm. Weather-forecasting is a component of every skipper's intellectual tool kit, and the ether is replete with up-to-date
weather synopses. On your VHF you will have a
weather channel with a continuous broadcast of conditions all around the shores of Britain.
Fire in the
galley? Your cooker is likely to be
propane gas. Provided you observe the normal
safety routines in handling the gas supply, you will not have a fire there.
Fire in the
engine room? Presumably your auxiliary is a
diesel engine. Petrol engines are long since passé, so there is really no risk of that, and, of course, you have, and know how to use, the mandated fire extinguishers.
Electrical fire? Not if you keep your system tidy and sound as every skipper should do. Your main circuit breaker and the mandated fire extinguisher will keep you safe there.
Well, enuff of that. For cruising around the British Isles I really do not see a reason for accepting the encumbrance of carrying a raft in a cannister at all, and I should think that if you are indeed a
novice, you will come to share that opinion after a very few seasons of coastwise cursing.
All the best :-)!
TrentePieds.