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Old 08-03-2012
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Re: CATAMARAN DESIGN and BRIDEDECK CLEARANCE

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Originally Posted by piclarke View Post
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Open for discussions and opinions


(1) Interested in comments from Catamaran owners re Bridge deck clearance. I have heard reports
about low bridge deck clearance causes Slamming and pounding of significant proportions when sailing to windward. Comments please.

(2) Some designs have .500m clearance others .700m and I notice the latest designs on some are rising to .950m and 1.2m
bridge deck clearance. Comments please.

(3) I have noticed quite a few catamarans stay in port while Monohulls make passage to their next port. When asked why they are staying in port
I,m told waiting for for less wind and a better wind angle. Supposedly this has something to do with Slamming and pounding? Comments please.

(4)Galley preference. Main bridge deck or hull. As a interested cook and have cooked on numerous vessels I ponder the merits in having the galley within the bridge deck. Re heat transfer- Condensation- Moisture- the heat generated from the galley causing condensation on the ceiling, moisture gathering in drapes, upholstery plus smells and vapours, books in library pages being affected and absorbing the moisture. As usually with most modern designs the chart table and electricall main board and electronics are also positioned in main saloon - bridge deck, I wonder the wisdom re this.
I would have thought the galley in the hull would be preferable with higher head room - hatches and extractions fans and more ventilation - thus removal and moisture control would be more efficient, plus providing a larger lounge area in the main saloon. After all the kitchen in most homes is not in the lounge. Plus normally in the tropics if one does not have air conditioning one gathers with chilled drinks in the cockpit area with sea breezes and a view and possibly to be a nosey parker while the cook cooks. Comments please.


Below are some hyperlinks to a new design with increased bridge deck clearance. How ever I,m would have thought for offshore passage and in moderate to heavy seas a clearance around about 1.6m to 1.8m
would be needed to avoid constant bridge deck slamming when going to windward or even slightly cracked
sheets. Comments please.

http://www.schionningdesigns.com.au/...udyplansA4.pdf


Schionning Designs -

Schionning Designs -

Thanks in anticipation.


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