MT3000 constant disconnects

On a cruise ship using a MT3000 as a repeater, it works for about 10-15 minutes then disconnects from the boats WiFi, if I just logon to the router and reconnect it it’s fine for another 10-15 minutes.

Anything I could be missing?

Quite likely the upstream router is kicking you off. Why, you need to read the logs to find out. There’s a billion reasons…