Anomaly suggested the Montgomery 23 which would excede your towing limit at 3500lb.
The Montgomery 17 he/she suggested looks like a decent boat and has an impecable pedigree.
The Compac only going to point OK with the very long shallow keel
it has and it is really undercanvassed for the PNW. Couldn't say about the MT lakes but don't expect it is much windier there.
Among the other boats on the list I would lean towards the Catalina
. There are 15,000 of them built, they are still in production, and the company is still a going concern so you can get support. The boat weight is considerably higher than the others implying heavier/stronger construction. The tradeoff is a lower SA/D ratio, 17.9 compared to most of the others in the low 20's. That said, being the heavier boat the ratio is likely to drop less when loaded.
What I would do is come up with an estimate of weight that will be on the boat while cruising:
Crew weight and personal gear
for the regular crew. Ignore the occasional guest.
60% of the max water
you intend to carry
60% of the max fuel
1/2 of the max food
1/2 weight of ice1/2 wieght of holding tank
or porta-pottie contents (porta-pottie weight extra)
Weight of sails
Anchors, chain and rode
BatteriesGenerator/solar panel if carried.
cold weather clothing
gear">foul weather gear
, ice and sewage are halved because they will be consumed or created between port stops.
You should be conservative about fuel
so port stops will be made before running completely out. For me I want 20-25% remaining when I refuel & rewater giving me a reserve if fuel or water aren't available where I thought they would be. That means the average weight of each is 60%-ish over the course of each leg.
Make a spreadsheet for the boats you are looking at. Columns will be
LWL in ft (Length at Water-Line)
advertised in lb (light boat)
loaded (light boat + load weight)
SA/D = sail area/(displacement/64)^.666
D/L = (displacement/2240)/(LWL*.01)^.333
The boat info you need can be found at
Compare SA/D-loaded to get an idea of how boats will compare in light air.
Compare D/L to get an idea of which boats are built comparatively heavier/stronger. This is a bit tenuous but better than nothing. If 2 boats with the same hull
but one is built with internal bulkheads and plywood
furniture and the other has a lot of glass liner molded in weights are going to diverge greatly for essensially the same hull
strength. I would guess the liner boat is heavier. Checking out boats you are considering will need to be done to compare how much liner there is and if a D/L comparison is at all valid.
Comparing D/L-loaded would give you an idea of heavy air performance, though the boats are all so so similar in length that would be a tenuous comparison again.
Doing the load wight in the same spreadsheet will make it easy to modify and have all the results automatically update.
See if you can find how many of each boat was built. Gives you an ideal how well supported theat boat will be. Also check for a class association.
I assume you have eliminated the Cal20 which I would be most likely to buy in that size range. Seals
Spars supports this and a lot of the smaller Cal's very well with parts
Whatever boat you get, get a drifter for the San Juans, don't just depend on a Genoa
or lapper. I would spend money
on a drifter and pole (whisker or spinnaker) before getting a spinnaker
. Drifter can go upwind or down.