I'm an electrical engineer - I don't understand how what you said can be true at a wide and effective scale. Of course any device can interfere with something else - But what kind of evidence exists that starlink terminals, and in particular the pattern steering and bands use, actually cause interference in a meaningful way to activly used marine system used on these kinds of crafts.

Starlink used Ku and Ka bands, so we are talking about 10-12Ghz and 37-42Ghz downlinks, and 14Ghz and 47-51Ghz uplink. This is highly directional radiation, and even with beam forming and reflections is not likely to have any specific high interference risk. Clearly the downlink transmission from the satellite is exceptionally low power at the ground, even with the beamforming used in the satellites.

I would love to learn that this is a real problem with actual tested data.