For direct mountingApplication depending on required visibilities. Lights with ANCHOR-symbol on European inland waterways applicable. Approvals: USCG, IMO, A16, CE, Steuerrad Ship type: sail/power, sail Ship size: < 50 m / < 164 ft., < 20 m / < 65 ft., < 20 m / < 164 ft. Voltage: 12 V, 24 V Visibility: 2 nm, 3 nm