The Combined Nomenclature (CN), v1:2019
8907 90: Rafts, tanks, coffer-dams, landing stages, buoys, beacons and other floating structures (excl. inflatable rafts, vessels of heading 8901 to 8906
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=f5446a47-febf-4bd1-98b9-8e347fa96472