flat deck vs. raised cabin ?

[Aquah0lic]

Hi, I am new to this board. I read alot before this post so I don't think this has been asked lately.

I'm researching for a live aboard (bahamas style) and I'd like to hear pros and cons for a flat deck (ex. 1985 39' Oday) vs. something like a 1979 38' Morgan with the raised cabin area.

Obviously the flat should be easier to see over and give my dog a little more run around room, but what about limited light through little portholes? Do the raised cabins spring more leaks around windows, etc? I am 6'1" so I do need a little headroom, but I've seen some flat tops with enough.

Thank You for your response.
Fred

[swagman]

Hi Fred,
I think you'll find the older designs (ie those with no raised cabin top) were orginally designed that way to simply reduce windage / resistance to green water. In such older days the joints in windows etc were so poor a rasied cabin top usually leaked. Clearly with more modern sealing products such leaks are hopefully a thing of the past.
So looks aside (I personally think too high a cabin top could easily spoil a boats lines) there few advantage today in going for a 'flat top' design. For me a livaboard needs light, air and space, and IMHO a raised cabin top should give you all of those - plus allow you to stand tall.
Cheers
JOHN

[Pblais]

Flat decks are an advantage for a race crew to negotiate and allows water to wash over easily. But for living aboard you can get more light and ventilation with a raised cabin.

[psteele235]

Having just bought Andante - a De Kleer Fraser 30 - I am enthusiatic about the light, the headroom and the visibility the raised deck gives.

[beached]

Originally Posted by psteele235

Having just bought Andante - a De Kleer Fraser 30 - I am enthusiatic about the light, the headroom and the visibility the raised deck gives.

If Andane is the one listed by Martin Bird in Annapolis, you may suffer from the curses I threw your way for having bought her before I was aware. Enjoy.

[delmarrey]

Head room will be the issue. It'll take a larger boat to get enough headrom with the flat deck. As for windage, the more freeboard, the more windage and flat decks usually have more freeboard until the headroom peaks out, then it starts back the other way.

There is a nice 60'er in Port Gardner with a flat deck that catches my eye on occasion. But way too much rigging for a single hander like myself.

One advantage is if you plan to have gests in calm waters a flat deck is nice. A disadvantage is when the water breaks over the deck it washes right into the cockpit unless water boards are in place.

But in the cooler climates a cabin is better..................._/)

[defjef]

I have a "flush deck". The Contest 36s has more freeboard and so she is quite dry to sail. Huge head room throughout, but the increased windage makes her dance a bit on a mooring especially since she is a fractional rig.

I like the increased real estate of the flush deck and it allows me to plant two solar panels over the coach roof which are only a problem with flaking the sail... usually a time when it is easy to avoid them.

Climbing aboard is a bit harder too.. whether at floating dock or from the drink. We have a fold down stern boarding ladder for that.

jef
sv shiva

[Aquah0lic]

DEFJEF, could you please explain the windage part of your reply? I've never lived on a boat and have limited sailing experience....Thanks

[stuartcnz]

For some well thought out raised deck designs, check out Tom MacNaughtons Coin Collection series. www.macnaughtongroup.com Especially the 30ft Sovereign and 36ft Crown Jewel designs. These boats have more useable living space and deck space than any other yachts of their size that I know of. Also have a look at www.sylinnea.com for photo's and commentary about a Crown Jewel in Sweden.

[defjef]

In my case I have pretty high freeboard for the length of the boat. So if I am parked next to another 36 with a dog house or raised coach roof... the top of his coach roof is more or less at high as my deck. His deck is 15" or more lower.

In addition Shiva is a fraction rig with a deep fin so she tends to sail about on a mooring and the yawing is amplified by the high freeboard which catches the wind and pushes the bow off until the wind catches the stern and send the bow off in the other direction. To mitigate this dancing I use a riding or steadying sail when moored which keeps the boat weather cocked to the wind like a blade of a wind vane.

jef
sv shiva