6 Best Chartplotter Enclosures for Marine Use
Salty air can destroy electronics. We review 6 marine-grade chartplotter enclosures that safeguard your navigation gear, ensuring offshore self-reliance.
You’ve just spent a small fortune on a new chartplotter, the digital heart of your vessel’s navigation system. But that shiny piece of tech is useless if the first big wave or a season of corrosive salt spray kills it. Protecting that investment isn’t just about saving money; it’s about ensuring you have a reliable guide when the weather turns and you’re miles from shore.
Disclosure: As an Amazon Associate, this site earns from qualifying purchases. Thank you!
Why Salty Air Demands a Robust Enclosure
Salt in the air is relentless. It’s not just water; it’s a crystalline abrasive that settles on every surface, works its way into the tiniest crevices, and corrodes metal contacts with frightening speed. The back of your chartplotter, with all its exposed ports and connectors, is ground zero for this assault.
Beyond corrosion, the sun is your other enemy. Constant UV exposure makes cheap plastics brittle and causes rubber gaskets to crack and fail. An enclosure that looks fine in the showroom can become a cracked, leaking liability after just a few seasons in the tropics. A proper marine-grade pod uses materials specifically formulated to resist this UV degradation, ensuring its seals remain pliable and effective for years.
This isn’t just about protecting a device. It’s about preserving a core function of your self-reliance. When you’re navigating a tricky channel in the fog or running from a squall, the last thing you need is a flickering screen because saltwater found its way onto a circuit board. Your enclosure is the armor for your most critical electronic tool.
NavPod GP1050: The Sailboat Helm Standard
If you’ve been on a modern sailboat, you’ve likely seen a NavPod. They are the benchmark for pedestal-mounted helm protection for a reason. Their design philosophy is built around creating a completely sealed environment for your electronics.
The key is their construction. NavPods use a thick, high-gloss, acrylic-capped ABS plastic that’s incredibly resistant to UV damage and impact. More importantly, they feature a double-gasket system that creates a watertight seal, keeping both spray and internal condensation at bay. They even use nickel chrome-plated stainless steel fasteners that are tamper-proof, adding a layer of security at the dock.
The tradeoff is that you’re buying into a premium, integrated system. NavPods are designed to fit specific guard rail widths and chartplotter models, which means less fiddling and a factory-perfect fit. However, this precision comes at a higher price point, and they aren’t as universally adaptable as some other options if you have an unusual helm setup.
Scanstrut Helm Pod: Unmatched Versatility
Where NavPod focuses on a standardized, robust system, Scanstrut excels in versatility. They understand that no two cockpits are exactly alike. Their Helm Pod range is engineered to adapt to a huge variety of rail sizes, angles, and mounting configurations.
Scanstrut pods often feature an internal saddle system that clamps securely to different tube diameters, making installation straightforward on non-standard pedestals. The pods themselves are known for a clean, modern aesthetic and are delivered uncut, giving you the flexibility to lay out multiple smaller instruments alongside your main chartplotter. Some models even have a quick-release handle, allowing you to take your expensive electronics below deck for security or storage.
This adaptability is Scanstrut’s greatest strength. It’s the perfect solution for a refit where you’re trying to integrate new electronics into an existing, and perhaps quirky, helm station. You get a professional-looking installation without needing to resort to custom fabrication.
SeaView Box: For Overhead & Bulkhead Mounting
Not every chartplotter lives on the steering pedestal. For pilothouses, overhead radio boxes, or bulkhead installations, you need a different kind of protection. This is where the SeaView Box shines. It’s not a full pod, but rather a housing that protects the vulnerable backside of a flush-mounted unit.
When you cut a hole in a bulkhead to mount a screen, you expose the plotter’s connectors and wiring to whatever is behind that panel. In a marine environment, that often means moisture, condensation, and salt. The SeaView Box creates a sealed, protective enclosure behind the mounting surface, shielding those critical connections from the elements.
Think of it as essential infrastructure for a clean and durable installation. It prevents water that gets behind a panel from dripping directly onto your electronics. For any installation where you’re cutting into the boat’s structure, a backing box like this is a non-negotiable part of doing the job right.
Pelican 1400 Case: A Rugged DIY Solution
Protect your valuables with the Pelican 1400 case. It's watertight with a customisable Pick N'Pluck foam interior and automatic pressure equalization valve.
Sometimes, the best solution is the one you build yourself. For the ultimate in rugged, impact-proof protection, nothing beats a modified Pelican case. These cases are legendary for their toughness and waterproofing, making them an ideal starting point for a DIY chartplotter pod.
The project involves carefully cutting an opening for the screen in the lid of the case and creating a flange to mount it against. A clear acrylic or polycarbonate window is then sealed in place with marine-grade sealant like 3M 5200. The case itself can then be mounted using a RAM Mount or a custom bracket. It’s a hands-on job that requires precision and patience.
This is the path for the pragmatist who values function over form. It won’t have the sleek, molded look of a NavPod, but it will likely be more waterproof and impact-resistant than anything else on the market. It’s an affordable, bombproof solution for smaller boats, expedition vessels, or anyone who trusts their own craftsmanship above all else.
Seaview SPOD: For Satdomes & Chartplotters
The Seaview SPOD occupies a specific niche. It’s less of a standalone product and more of a component within a larger Seaview mounting system. These are commonly found on powerboat radar arches or sailboat mast mounts, designed to create a clean, integrated stack of electronics.
Typically, you’ll see a radar or satdome on top of a Seaview mast mount, with a SPOD mounted just below it to house the chartplotter or radar display. The SPOD comes pre-cut for your specific MFD model, ensuring a perfect fit. This creates a single, streamlined tower for your electronics, keeping wiring tidy and protected.
This isn’t the right choice for a simple helm pedestal. The SPOD is for boaters who are installing multiple pieces of equipment on a mast or arch and want a consolidated, factory-finish look. It’s about system integration, not just single-device protection.
Poly-Planar WC-400: Compact & Waterproof
Don’t overlook the simple solutions. The Poly-Planar WC-400 isn’t a full pod, but rather a heavy-duty waterproof cover designed for gimbal-mounted (bracket-mounted) electronics. It’s a tough, UV-stabilized plastic housing that completely encases a smaller chartplotter or fishfinder.
Think of it as a protective clamshell. You mount your device on its standard bracket, and the WC-400 mounts around it, with a hinged, gasket-sealed front cover that you can open for use and snap shut for protection. It’s an ideal solution for open boats, center consoles, or tiller-steered sailboats where a bulky pod would be overkill.
This is the perfect choice for protecting a secondary display in the cockpit or for smaller vessels where electronics are constantly exposed to spray. It’s simple, effective, and provides excellent protection without the cost or installation complexity of a full helm pod. It proves that robust protection doesn’t always have to be complicated.
Key Factors in Choosing Your Chartplotter Pod
Your decision should start with one simple question: Where will it be mounted? The answer immediately sorts your options. A steering pedestal requires a NavPod or Scanstrut. A bulkhead points toward a SeaView Box. An open cockpit with a bracket-mounted unit is a perfect candidate for a Poly-Planar cover.
Next, scrutinize the materials and construction. Look for high-quality, UV-stabilized ABS plastic or fiberglass. A double-seal or a deep, robust single gasket is crucial. Check that all hardware is 316 stainless steel to prevent rust streaks and fastener failure. The quality of the seal is the single most important feature.
Consider long-term usability. How easy is it to access the wiring on the back of the unit for service or upgrades? Are the fasteners proprietary or a standard size you can easily replace? For security, some pods offer tamper-proof screws, which can be a valuable deterrent in a busy marina.
Finally, evaluate the fit. Many pods come pre-cut for specific chartplotter models. This is a huge advantage. It saves you the stressful task of cutting a perfect hole in a brand-new, expensive piece of plastic and ensures a factory-quality seal. If a pre-cut option exists for your unit, it should be your first choice.
Ultimately, your chartplotter enclosure is not an accessory; it’s a critical piece of safety equipment. It ensures that your primary navigation tool works when you need it most. Choosing the right one is a foundational step in building a truly capable and self-reliant vessel.
