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 Drain Tube - 520320-1

Sea-Dog Brass Drain Tube

Whitecap Nylon Garboard Drain Plug - 3051BC

Whitecap Aluminum Snap-Lever Type Bailer Plug

Seaview Vault Series Transom Drain Plug - SV101V

T-H Marine Floor Drain and Vent

T-H Marine PVC Push-In Drain Plug

White Water Wire Deck Plate Key - 1350KY

Vetus Wrench Key - VE87

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

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

Sea-Dog Snap Handle Drain Plug - 520075-1

Attwood Drain Plug Kit - 17211-3

Whitecap Garboard Drain Replacement Plug - 6352C

Whitecap Pull-Up Hose Deck Fill

Whitecap EPA Pressurized System Deck Fill

Whitecap Universal Push-Up Deck Fill Replacement Cap

Seachoice Deck Plate Key and Tool - 32671

Seachoice Bailer Safety Kit - 45431

Seachoice Gas Deck Fill with Cap & Strap Tether - 32011

Seachoice Nylon Deck Fill with Cap

Seachoice Deck Fill Replacement Cap

Whitecap Washdown Inlet

Whitecap Brass Drain Tube - S-5064C

Sea-Dog Universal Deck Plate Key - 335690-1

Sea-Dog Deck Fill Key - 351399-1

Attwood Livewell/Bailer Drain Plug - 1/2" - 7533A7

Centek Vernay Scupper Drain Fitting

Barton Drain Plug

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

Whitecap Garboard Drain & Plug - S-5051C

Whitecap Brass Snap-Lever Type Bailer Plug

Whitecap Aluminum Screw Type Bailer Plug

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

Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

T-H Marine Drain Plug

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Overflow Drain Tube - ODT-2T-DP

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

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

Perko Locking Deck Fill - Diesel - 0599DPDCHR

Perko Locking Deck Fill - Gas - 0599DPGCHR

Perko Locking Gas Fill - 1399DP0CHR

Sea-Dog Garboard Replacement Drain Plugs - 520051-1

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

Perko Plastic Straight Neck Vented Deck Fill - 0543DPGBLK

Perko Polymer Gas Fill - 1613DP0BLK

Perko Replacement Vented Flip Top Cap - 0795DP0BLK

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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