floor pan for 1974 cal measurements (Chris)

Wilkie's work sets the standard. anyway, here we go: at the base of the pan, front to aft:76 5/8 "; top of pan front to aft: 78"; at base from corner of settee to aft is 55"; from mast step notch to aft at base 74 1/2". notch is 2 1/4" X 3 1/2" at base (approx on this) the 3 1/2 is with the beam. the settee base at straight across over the floor not inc. curve of pan is 23 1/4. In case you need it, the head floor pan is at least 27 1/2 f to aft; the beam about 34" head framing to wet locker, but a more equipped boat might have a vanity? Didn't get verticals but will this week....center of pan at least 8 inches. sorry. so at least you have an idea of materials needed not counting the curve of the pan or the elevation. probably could make paper templates. Now, the thermal thing, about 6 pm...shot the base of mast; 39.5 degrees (F),cockpit floor by tiller 42.6 (this is where boat rises up to least in the water), over the engine in the cockpit 45. (the mass of the engine should be slower to change) cabin bulkhead: 47; A-4 engine44; carpet 49; v-berth mattress 43(why we went home last night); under the carpet 51! and air under floor 53. The water temp was 51. Have you considered running something like heated (with hot water) pipes in the sole or similar? this assumes your engine will be running, or you are at the dock with electricity. some of the dickerson wood stoves can be offset so as not to cook your boat, but probably are either too dangerous or stinky. Helen

On 11/28/2010 10:42 PM, Helen Horn wrote: > > Now, the thermal thing, about 6 pm...shot the base of mast; 39.5 > degrees (F),cockpit floor by tiller 42.6 (this is where boat rises up > to least in the water), over the engine in the cockpit 45. (the mass > of the engine should be slower to change) cabin bulkhead: 47; A-4 > engine44; carpet 49; v-berth mattress 43(why we went home last night); > under the carpet 51! and air under floor 53. The water temp was 51. On the subject of temperatures and warmth, and in particular, the temperatures of surfaces.... My brother, who knows more about this stuff than I do, pointed out once that comfort is affected greatly by radiant heat loss from your body. Warm surfaces radiate heat to cold ones. That's why, in northern latitudes where I live, drawing a thin white curtain over a window at night will make a person sitting near it feel warmer, _even if the air temperature remains constant_. The curtain reflects the radiated heat from your body, reducing losses to the cold, dark surface of the window. It's also who reflective insulation works when properly installed. Or space blankets, for that matter. It's also why in-floor radiant heat works and allows people to feel comfortable in cooler ambient air temperatures than they might require with a hot-air heating system. Boats are basically sitting in a big heat sink, so the part below the waterline is always going to feel cold. The part above the waterline will feel cold too when the air is cold. You can use a thermal break like a closed-cell foam on the inside of the hull, but another way to increase comfort is to use reflective surfaces. The Reflectix brand of insulation is pricey, as I recall, but effective and relatively thin. Chris Campbell

Thanks Helen for the numbers. Its really appreciated. The issue with insulating such a boat is to first stop all the air leaks and have not tracked then all down. However have a pretty good idea where the penetration is. Theory is this, air get into the engine compartment from the cockpit lockers, which are pretty hard to seal up. Air then passes into the main cabin through the cabinetry work Here is where it can be stopped as there are lots of leaks due to joints separating etc. Will get to work on these numbers. Again much appreciated as they are good enough to get some estimates and generate a materials list. /ch

I recommend a stick of incense as an aid in finding air leaks. Candles work as well. I think the pros use candles and occasionally set the place on fire. Allen On Mon, Nov 29, 2010 at 6:57 AM, chris123 <ch… [at] gmail.com>wrote: > > > Thanks Helen for the numbers. Its really appreciated. The issue with > insulating such a boat is to first stop all the air leaks and have not > tracked then all down. However have a pretty good idea where the penetration > is. Theory is this, air get into the engine compartment from the cockpit > lockers, which are pretty hard to seal up. Air then passes into the main > cabin through the cabinetry work Here is where it can be stopped as there > are lots of leaks due to joints separating etc. Will get to work on these > numbers. Again much appreciated as they are good enough to get some > estimates and generate a materials list. > > /ch > > > >

I would caution that the measurements for our boats can vary a little. A "production" boat is not necessarily a "precision" boat. Cheers, Anyway Charlie From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] On Behalf Of chris123 Sent: Monday, November 29, 2010 9:58 AM To: Ca… [at] yahoogroups.com Subject: Re: [Cal_Boats] floor pan for 1974 cal measurements (Chris) Thanks Helen for the numbers. Its really appreciated. The issue with insulating such a boat is to first stop all the air leaks and have not tracked then all down. However have a pretty good idea where the penetration is. Theory is this, air get into the engine compartment from the cockpit lockers, which are pretty hard to seal up. Air then passes into the main cabin through the cabinetry work Here is where it can be stopped as there are lots of leaks due to joints separating etc. Will get to work on these numbers. Again much appreciated as they are good enough to get some estimates and generate a materials list. /ch