When we talk about maritime environments and IoT, things get a little rough. Green saltwater is kryptonite to IoT. Corrosion eats through hardware, connectors fail, sensor accuracy drifts and you’ve got pretty limited ability to swap out devices when you’re in the middle of 1000 miles of ocean.
Add spotty satellite connectivity, power constraints on remote buoys, and the physical pounding from waves, and you’ve got a hostile environment that makes most off-the-shelf IoT gear look like it was designed for a winter’s night in, wrapped in a blanket, cuddling a hot cocoa.
Subsea cranks it up to 11
Subsea takes everything bad about maritime and cranks it to 11. Sure, you’ve still got the salt water corrosion problem, but now add crushing pressure that demands expensive, specialized housings. And the real killer? Radio works differently underwater, slow, bandwidth-starved, and often unreliable. When something fails a thousand meters down, you’re not just replacing it, you’re calling in an ROV at eye-watering cost.
Maritime IoT is about durability. Subsea IoT is about durability + acoustic comms + extreme inaccessibility + the knowledge that a single failure costs six figures to fix.
So, is the light at the end of the barrel?
Well, we’re hoping you got down to this depth without hyperventilating. Yes, there are a lot of things happening, in parallel, out there in the deep blue. Fiber and hybrid tethers are proving faster links to the surface relay point. Edge devices and AI are creating a set of devices that are not more comfortable, but better at doing more with less, which changes the bulk.
Autonomous systems like ROVs and AUVs are getting better while material science is dropping off better casings and coatings, which buys more time between failures and better boats to build a platform on. Tools like Starlink, AIS, other MCIS technologies and standard tools (GPS, chart plotters, Radar, VHF, etc.) are combining reliable overwatch and automation.
The value of wireless communication in a constantly shifting, saline, environment cannot be overstated. Lessons learned in such a tough school transfer into better IoT. There is a open market for good tools in this sector and not a lot of suppliers interested in the investment in “ruggedized” aquatic functionality.
