U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
Packed and shipped within Canada!

Premium Marine Quality Parts

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Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean ... More Details

Molded with a collar on the bottom to hold deck plate bags or other round containers. Injection molded ABS. Molded to the highest standard using top quality UV stabilizers and anti-oxidants. Use silic... More Details

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean ... More Details

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean ... More Details

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean ... More Details

The Sea-Dog® Screw-Out Deck Plate is constructed with UV stabilized injection molded ABS and feature a clear polycarbonate lid, allowing visual inspection of the watertight compartment without removin... More Details

Molded with a collar on the bottom to hold deck plate bags or other round containers. Injection molded ABS. Molded to the highest standard using top quality UV stabilizers and anti-oxidants. Use silic... More Details

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean ... More Details

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean ... More Details

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Sea-Dog 3371981 Deck Plate Lanyard - 337198-1 - 354-3371981F1

Sea-Dog Line, Lines & Rigging
$9.39
12" Lanyard is designed to retain deck plate lids. Fits all Sea-Dog® Deck Plates. Constructed of corrosion resistant 304 stainless steel. Attaches to lid with #6 RH fastener (included) and to the inte... More Details

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Sea-Dog 337310 Thru Vent, White - 337310 - 354-337310F1

Sea-Dog Line, Lines & Rigging
$3.39
Designed for cabin or bilge ventilation. Constructed of injection molded polypropylene they are UV resistant. For use with 3" exhaust hose. Installs with four #8 FH fasteners (not included). Vent area... More Details

Flush Thru Vents are designed for cabin or bilge ventilation. Constructed of UV resistant injection molded ABS. For use with 3" exhaust hose. Installs with four #8 FH fasteners (not included). Avoid c... More Details

Flush Thru Vents are designed for cabin or bilge ventilation. Constructed of UV resistant injection molded ABS. For use with 3" exhaust hose. Installs with four #8 FH fasteners (not included). Avoid c... More Details

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Sea-Dog 337320 Thru Vent, Black - 337320 - 354-337320F1

Sea-Dog Line, Lines & Rigging
$3.30
Designed for cabin or bilge ventilation. Constructed of injection molded polypropylene they are UV resistant. For use with 3" exhaust hose. Installs with four #8 FH fasteners (not included). Vent area... More Details

Injection molded ABS.... More Details

Injection molded ABS.... More Details

Injection molded ABS.... More Details

Flush Thru Vents are designed for cabin or bilge ventilation. Constructed of UV resistant injection molded ABS. For use with 4" exhaust hose. Installs with four #8 FH fasteners (not included). Avoid c... More Details

Flush Thru Vents are designed for cabin or bilge ventilation. Constructed of UV resistant injection molded ABS. For use with 4" exhaust hose. Installs with four #8 FH fasteners (not included). Avoid c... More Details

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Sea-Dog 337500 Louvered Vent, Black - 337500 - 354-337500F1

Sea-Dog Line, Lines & Rigging
$6.96
Louvered Vents are designed to promote air circulation and prevent mold, mildew, and unpleasant odors. Ideal for cabin doors, lockers, dock boxes, etc. Easy to install with four #8 FH fasteners (not i... More Details

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Sea-Dog 337501 Louvered Vent, White - 337501 - 354-337501F1

Sea-Dog Line, Lines & Rigging
$7.18
Louvered Vents are designed to promote air circulation and prevent mold, mildew, and unpleasant odors. Ideal for cabin doors, lockers, dock boxes, etc. Easy to install with four #8 FH fasteners (not i... More Details

Flush Thru Vent designed for cabin or bilge ventilation. For use with 3" exhaust hose. Constructed of corrosion resistant investment cast 316 stainless steel. Installs with four #8 FH fasteners (not i... More Details

Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.