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

Whitecap S-7021 Replacement Cap and Chain - S-7022C

Whitecap Brass Drain Tube - S-5064C

Seaview Vault Series Transom Drain Plug - SV101V

Whitecap Aluminum Screw Type Bailer Plug

Sea-Dog Chrome Plated Zinc Hose Deck Fill Replacement Cap - 351755-1

Whitecap Brass Snap-Lever Type Bailer Plug

Whitecap Brass Screw Type Bailer Plug

T-H Marine Floor Drain and Vent

Seachoice Splashwell Drain Tube - 19131

Whitecap Aluminum Turn Type Bailer Plug - S-0288

Whitecap Tee Handle Drain Plug with Stainless Steel Cable & Nut - S-0242C

Seachoice Replacement Garboard Drain Plug

Seachoice Drain Plug - 18781

Seachoice Scupper Valve - 18261

Seachoice Deck Plate Key - 32651

Sea-Dog Snap Handle Drain Plug - 520070-1

Attwood Drain Plug Kit - 17211-3

Sea-Dog Snap Handle Drain Plug - 520075-1

Sea-Dog T-Handle Drain Plug

Whitecap Replacement O-Ring for Deck Fill Cap - 6061OR

Beckson Screw Type Drain Plug - 1"

Seachoice Deck Fill Replacement Cap

Attwood T-Handle Stainless Steel Drain Plug - 7518PD2

T-H Marine All Purpose Drain/Hatch Drain

White Water Wire Deck Plate Key - 1350KY

Seachoice Nylon Drain Plug - 18641

Seachoice Drain Tube

Sea-Dog Deck Fill Key - 351399-1

Seachoice Drain Plug

Sea-Dog Brass Drain Tube

Whitecap Nylon Garboard Drain Plug - 3051BC

Seachoice Replacement Plug & Gasket - 18651

Seachoice Splashwell Drain Tube - 19121

Barton Drain Plug

Sea-Dog Drain Tube - 520320-1

Sea-Dog Replacement Plug - 520021-1

FillGuard Deck Fill Protection Devices - 3 Pc Gasoline Set - GASOLINEKIT

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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