Deck Fills & Drains

About Deck Fills & Drains

Cockpit Drains & Scuppers

Defender Marine offers a variety of cockpit drains, self-bailing scupper drains, and thru hulls with scupper valves. Thru hull valves and deck scuppers can be installed above or below the waterline and are offered in a polymer composite called Marelon, injection-molded nylon, or molded fiberglass.

Self bailers take the guess work out of cockpit drains.

When a boat is underway the pressure of water running out through the scupper opens a one-directional valve to release the water from the hull. When the scupper is closed, during rest, no water can leak into the boat. Self-bailers assist bilge pumps in keeping the hull free of excess water and are especially helpful on boats that are "wet" or take on water and spray while running.

What are deck drains made of?

Defender Marine offers scupper drains fabricated out of a variety of materials. Marelon is a polymer composite that never cracks or loses its shape, while injection-molded nylon is strong and UV resistant. Molded fiberglass cockpit drains, as well as polycarbonate boat scuppers, offer a few more options while shopping for scupper drains.

I've got a new scupper, now what?

Installation above the waterline is not complicated and can be a DIY project - just remember to measure twice! Also, examine that boat scupper drain that you have purchased and be certain that it will work for your application. Hose barb or threaded connections are questions that need to be answered before the project starts, as cockpit drains and scuppers must be plumbed to exit the hull. Be certain the project is completely prepped, and all gasket materials are ready to go before you start!

Deck Fills & Drains

Groco SCUS Series Hose Barb Deck Drain

Whitecap Aluminum Screw Type Bailer Plug

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Seachoice Garboard Drain Plug - 50-18661

Seachoice Gas Deck Fill with Cap & Beaded Chain Tether - 32041

Seachoice Gas Deck Fill with Vent & Cap - 32061

Seachoice Splashwell Drain Tube - 19121

Whitecap Nylon 90 deg. Drain Tube Kit - S-3850

Whitecap Nylon Cockpit Scupper

Forespar MF 830 Deck Fill

Perko Plastic Straight Neck Vented Deck Fill - 0543DPGBLK

Perko Fuel System Locking Cap - 1324DP0BLK

Whitecap Self-Captive Garboard Drain Replacement Plug - 6354C

Nuova Rade Adjustable Flip-Up Drain/Bailer Plug - 45309

Perko Deck Fill - 1313DP0CHR

Perko Locking Deck Fill - Gas - 0599DPGCHR

Perko Locking Gas Fill - 1399DP0CHR

Sea-Dog Garboard Replacement Drain Plugs - 520051-1

Sea-Dog Plugmate Garboard/Drain Plug Wrench - 520045-1

Seaview Vault Series Pro Transom Drain Plug with Gasket and Garboard - SV101VP

Seaview Vault Stainless Steel Drain Plug

Whitecap Angled Scupper with Barb - 6559

Whitecap Nylon Garboard Drain Plug - 3051BC

Whitecap Garboard Drain & Plug - S-5051C

Whitecap Stainless Steel Screw Type Bailer Plug - S-0291C

Whitecap Aluminum Snap-Lever Type Bailer Plug

Seachoice Gas Deck Fill with Locking Cap - 32051

Seachoice Nylon Deck Fill with Cap

Seachoice Deck Fill Replacement Cap

Seachoice Scupper Valve - 18261

Seachoice Nylon Drain Plug - 18641

Seachoice Garboard Drain Flange & Plug

Seachoice Replacement Garboard Drain Plug

Seachoice Bailer Safety Kit - 45431

Whitecap Washdown Inlet

Perko Plastic Angled Neck Vented Deck Fill

Perko Polymer Gas Fill - 1613DP0BLK

Whitecap Gas Hose Deck Fill with Splash Guard - 6001

Whitecap Garboard Drain Plug - 6351C

Whitecap Self-Captive Garboard Drain Plug pkg

Whitecap EPA Pressurized System Deck Fill

Perko Straight Neck Vented Fill - 0591DPGCHR

Whitecap Stainless Steel Scupper with Hose Barb

Whitecap Universal Push-Up Deck Fill Replacement Cap

Whitecap Threaded Scupper - S-3814

Whitecap Brass Drain Tube - S-5064C

Whitecap Universal Deck Plate Key - S-7041P

Whitecap Nylon Deck Fill Replacement Cap

About Deck Fills & Drains

Cockpit Drains & Scuppers

Self bailers take the guess work out of cockpit drains.

What are deck drains made of?

I've got a new scupper, now what?

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