| Management number | 235502307 | Release Date | 2026/07/02 | List Price | $15.18 | Model Number | 235502307 | ||
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Navigating by paper chart or topo map is a skill worth keeping sharp, and the NRS HydroLock Map Case makes sure your navigation tools stay dry, visible, and accessible when you need them most.
The HydroLock zip seal provides a completely waterproof closure that keeps charts, maps, and guidebooks protected from rain, spray, and the occasional capsize. A clear urethane window lets you read both sides of your map without opening the case, and corner attachment points make it easy to lash securely to a deck bag, bow line, or any convenient point on your boat so it stays right where you need it on a long crossing or multi-day touring route. Four sizes accommodate everything from a folded topo section to a full nautical chart, and the larger sizes double as waterproof storage for a wallet, snacks, or a warm hat.
A note on maintenance worth keeping in mind: periodically clean the HydroLock sealing surfaces and lubricate with 303 Protectant to keep the closure operating smoothly and sealing reliably trip after trip. Not in stock? Give us a call at Frontenac Outfitters and we'll get it right to your door.
Not in stock? Give us a call and get it right to your door!
| Size | Interior window dimensions: | Overall dimensions: |
|---|---|---|
| XS | 6" L x 9" W | 10" L x 11" W |
| S | 8" L x 12" W | 12" L x 14" W |
| M | 15" L x 12" W | 18 7/8" L x 13 7/8" W |
| L | 18" L x 15" W | 21 5/8" L x 16 7/8" W |
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