00608nam a22001817a 4500 12489 12489 240702b 2023 ||||| |||| 00| 0 eng d 9780707747477 623.8 UKH UK Hydrographic Office. Admiralty list of radio signals : pilot services, vessel traffic services and port operations : NP286 (4) Vol. 6 4th UK UK Hydrographic Office. 2023 408p. purpose of admiralty radio signals phonetic alphabet and figure code the imo standard ship reporting system BK 0 0 ddc 0 623_800000000000000_UKH 0 NFIC 15709 MU MU GEN 2024-07-02 623.8 UKH MPC6861 2024-07-02 BK Permanent Issued to GMDSS Section