Seagoing vessels have every reason to want radar that goes beyond minimal performance requirements.

Coastal Surveillance

Shore-based radar has requirements all its own.  Antennas tend to be bigger in the name of gain and angular discrimination.  Remote control over digital networking is usually needed, as is dual redundancy.

Offshore Oil & Gas

The O&G industry places unique demands on radar, such as oil spill detection (OSD) and ice detection.

Yachting

Some of the marine industry's most sophisticated bridge electronics are found in super yachts, which call for better than average radar for being able to see small floating objects that might be damaging.