its unmannedIs the boat itself unmanned? It's hard to see and they don't mention that. It looks like there is a navigation bridge.
The forward looking sonar is a good thing to have when you're out in certain areas that have many islands with cropping rocks that extend well beyond the shores of the islands. A lot of those cropping rocks don't show up on the usual GPS depth meter, so the forward looking sonar would help quite a bit to avoid running aground into those rocks that can basically put a large hole in the bottom of your hull and ruin your day very quickly. But they are pretty expensive and they only came out recently for the private, boating industry. They give you 30 feet warning which is usually enough time to avoid a collision, depending on how fast you're going, of course.
also anti submerine