I would like to revisit the issue of cost/speed/comfort by seeking any advice
of those who have actually addressed this issue in a practical sense, rather than by spreadsheets.
I would like to ignore cost and reframe the discussion in regard to length/speed/comfort.
Leaving aside the real parameters of inherent hull speed
vs length, my preference, after owning two production boats in the past, is for a faster comfortable boat
less than 50ft. I find that beyond 50ft there are several mitigating factors which have been discussed at length on many threads herein.
The trouble is that I am not necessarily convinced that this equation is achievable.
For practical purposes let me define specification for comfort.
At 1.9m tall I need to be able to stand up throughout the boat
At least 400l water
At least 800l fuel
At least 2 50HP motors
At least 2KW Solar
At least 600a/h lithium
At least 200cu l of refrigeration
At least 20K BTU air con
At least 100l watermaker
2.9m dingy with 15Hp motor
One master hull
and two guest cabins
in each hull
6 man liferaft
For practical purposes let me define faster
(a) Typical 200nm per day passaging as compared to the 160nm per day of a production boat
(b) The ability to sail at 6kn in less than 10Kn wind
Now I am painfully aware that many on this channel would regard my comfort definition as a luxurious specification, so constantly reiterating this view is unhelpful. This is my requirement and reflects the requirements of many passaging cruisers I have discussed this issue with.
I have now studied (and sailed) many boats. It is clear to me that an O45 cannot achieve this spec in terms of load carrying capacity and still sail fast but an O51 can. A balance 450 (in its several variants) cannot achieve this, but a Balance 521 can (I am not sure about the Balance 482 and I do not want to wait for 3 years to find out). I know that the smaller seawinds cannot achieve this and still sail fast. I am not sure about the new seawind
45 footer and I do not want to wait for 5 years to find out.
I have now purchased a Lightwave 45 which I am equipping in order to determine the speed/comfort balance that is possible.
I have to say that on the basis of calculations alone I am quite skeptical that a suitable result can be achieved with a sub 50 ft boat, but I am keeping an open mind.
So I am interested in seeking feedback from those who actually have experimented with this issue with an actual boat sub 50ft, and actual cruising passages over extended distance and periods, and the performance results they obtained with increased load carrying capacity.