Assessed damage at windlass: Chain stuck between windlass drive and deck. Also battery voltage gauge showed 0 V. Turned out fuse tripped. Need new 135 A fuse. Released windlass drive manually and could untangle chain. Nowhere in Rostock a 135 A fuse was available. So replaced 135 A fuse with 80 A fuse and put slip on the windlass coupling. Tested anchor windlass: OK. Bow battery voltage gauge in cockpit: OK.
Assessed damage at bow thruster: Fuse ok. Drive looked ok. Went in water to cut out sheath. Tested bow thruster: OK.