Large Scuppers

Does anyone have a link for larger scuppers. Lots of 2" and 3" round ones but I'm looking for something the size of a license plate. Thanks, Stan

 

What is a scupper ? Bulwark door ? Transom drain ?

http://www.marineeast.com/a_sch/sch_det.asp?cid=09&pid=09_06

 

Hamilton Marine

 

A scupper I need drains the rear deck either thru the transom or side drain. It has a flap to let water out but does not allow water in. It is to drain a deck if a large volumn of water comes in over the side. Hamilton has nothing on scuppers or drains.

 

http://www.marineeast.com/a_sch/sch_...d=09&pid=09_06


Those are 2 x 6 ...... big scuppers. How much water must you shift ??


For larger scuppers you make them or use scuppers designed for commercial ships.

http://www.fraserbronze.com/scupper

http://www.lunenburgfoundry.com/Mar...uring/LIFE-Products/more-marine-hardware.html

 

Here is a link to scuppers/drains on Hamilton's website: http://store.hamiltonmarine.com/browse.cfm/drains/2,331.html
Largest is 3" x 9" with a flap.

 

Other than scuppers the " waterbox technique" were cockpit water drains from normal size, esthetically pleasing 25mm drains set in cockpit corners...then when the cockpit floods, runs overtop of a sile , floods the waterbox, then drains overboard thru sewer pipe size ports. In my opinion Its cheaper , better looking and more effective

 

thanks for the find at Hamilton marine. That is what I was looking for. When I typed scuppers on their website that did not show up for me. Appreciate the help from all.

 

A photo or drawing of the "waterbox technique" would be appreciated if possible.

 

Yes Michael I too would appreciate a drawing, first i've heard of such a system, ---Tnx. Geo

 

Perhaps I can snap a picture. A stout 12 or so meter twin outboard, alloy salvage workboat, has been recovering a yacht blown onto the beach. She has waterbox style cockpit drains.

This style works like a dam. Around the perimeter of this work boats aft cockpit, working deck, is a 150mm or so tall dam. This dam runs the perimeter of the working deck , is capped to keep workman feet from getting wedged and is fitted with drain grates cut into the top cap every meter or so . When a wave washes the aft cockpit, Green water escapes thru the grates, out the topsides, thru half moon openings..scuppers ...cut into the topsides. I didnt notice whether there are baffles in the dam arrangement to resist water blowback

 

recently saw those licence plate scuppers fail on tv, yes there was a failing waterpump
pumping the boat full in bad weather but than the scuppers did the rest
belive it or not, they were mounted outside in, boat sunk on tv