Shopping from Canada? 
Go to Defender Canada!
Boat Ready Since 1938
For generations, Defender has helped boaters maintain, repair, and outfit their boats with confidence. We’re more than a marine store — we’re your boating partner.
Our Story
Expert Help For Real Projects
Need help choosing the right parts, electronics, or outfitting gear? Our team understands boating projects because they’ve worked through them too.
Get SupportBuilt For DIY Boaters
From electronics and safety gear to maintenance supplies and upgrades, Defender gives hands-on boaters the tools and knowledge to keep their boats ready.
Shop Gear
Marine Electronics Buying Guides
Find the right chartplotters, radar, VHF radios, and navigation gear.
Boat Maintenance Essentials
From bottom paint to bilge pumps, keep your boat ready all season.
Outfitting Projects & Upgrades
Upgrade your boat with trusted gear and practical expertise.
Shop Marine Deals
Save on trusted marine gear, electronics, maintenance supplies, and more.
Shop Marine Electronics
Explore chartplotters, fishfinders, radar, VHF radios, and navigation gear.
Expert Customer Support
Questions about your next project? Our team is here to help.