T&T: Aft Cabin Ventilation

[Bob McLeran]

I just realized that my earlier post forgot to mention. . . .

We also use a wind scoop above the aft companionway hatch - the kind you 
frequently see on sail boats. It is deployable even without a boom to 
support the top corner (what would be called the "head" if this were a 
spinnaker on a sailboat). It can be deployed even without a boom to 
support the head. We use an extendable boat hook with the nylon loop at 
the head looped over the straight-ahead part of the "hook" supported at 
the top by 3-4 guys made from light nylon cord, with the base of the 
pole resting on the deck just forward of the opening in the hatch. The 
bottom can be fastened down near the deck with lines or spring clips 
(the kind you use when holding pieces of wood or plastic together when 
fastening). It does take a little work to deploy, and the recently 
discussed BreezeBooster (in the large hatch size) would probably work as 
well and be easier to set up.

<><><><><><><><><><><><>Mozilla Thunderbird<><><><><><><><><><>
Bob McLeran and Judy Young                  Manatee Cove Marina
MV Sanderling                               Patrick Air Force Base
Defever 41 Trawler                          Melbourne, Florida 



On 10/28/2007 11:03 AM, Bob McLeran wrote:
> <snip>
>
> Sanderling is a trunk cabin trawler (aft master cabin) with an aft hatch 
> offset to the starboard side, sliding doors on either side of the main 
> saloon, and a hatch in the v-berth. We find that at anchor, with the 
> pointy end generally facing the wind/breeze, we get plenty of 
> ventilation by keeping everything open. The venturi effect of the breeze 
> blowing down the side decks draws the air into the aft hatch and forward 
> out the open sliding doors. The person in bed on the side closest to the 
> hatch gets the full effect of the breeze; the other person gets a little 
> bit (guess who sleeps on the breezy side). Closing anything simply 
> reduces the amount of air flow.
>   
<snip>