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

Sea-Dog Nylon Drain Plug - 520010-1

Sea-Dog Garboard Replacement Drain Plugs - 520051-1

Sea-Dog Scupper Valve - 520500-1

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

Whitecap Nylon Garboard Drain Plug - 3051BC

Seachoice Replacement Plug & Gasket - 18651

Barton Drain Plug

Seachoice Splashwell Drain Tube - 19121

Sea-Dog Drain Tube - 520210-1

Beckson Screw Type Drain Plug - 1"

Seachoice Drain Plug

Attwood Drain Plug Kit - 17211-3

Attwood T-Handle Stainless Steel Drain Plug - 7518PD2

Seachoice Drain Tube

Seachoice Nylon Drain Plug - 18641

Scepter Snap Drain Plug - 1" - 10688 / 10666

Seachoice Scupper Valve - 18261

Seachoice Drain Plug - 18781

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

T-H Marine All Purpose Drain/Hatch Drain

Sea-Dog Garboard Drain Tube with Plug - 520050-1

Sea-Dog Snap Handle Drain Plug - 520070-1

Seachoice Deck Fill Replacement Cap

Sea-Dog Snap Handle Drain Plug - 520075-1

T-H Marine Floor Drain and Vent

Seachoice Replacement Garboard Drain Plug

Seachoice Splashwell Drain Tube - 19131

Seachoice Deck Plate Key - 32651

Sea-Dog Replacement Drain Plug - 520041-1

Whitecap Brass Snap-Lever Type Bailer Plug

White Water Wire Deck Plate Key - 1350KY

Whitecap Aluminum Screw Type Bailer Plug

Whitecap Aluminum Turn Type Bailer Plug - S-0288

Whitecap Brass Screw Type Bailer Plug

Whitecap Aluminum Snap-Lever Type Bailer Plug

T-H Marine Drain Plug

T-H Marine PVC Push-In Drain Plug

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

Groco Garboard Drain with Plug

Whitecap Brass Drain Tube - S-5064C

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

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

Forespar Garboard Drain Flange with Plug

Seachoice Deck Plate Key and Tool - 32671

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

Whitecap Nylon Deck Fill Replacement Cap

Seaview Vault Series Transom Drain Plug - SV101V

Whitecap Stainless Steel Snap-Lever Bailer Plug - S-0292C

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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