00550nam a22001577a 4500008004500000020001800045082001500063100002900078245010900107250001200216260003800228300001000266650002300276650004500299650004800344240702b    2023       ||||| |||| 00| 0 eng d  a9780707747460  a623.8bUKH  a UK Hydrographic Office.  aAdmiralty list of radio signals : global maritime distress and safety system ( GMDSS) : NP285 - volume 5  a4th ed.  aUKbUK Hydrographic Office.c2023  a492p.  aSolas Regulations   aDistress Communications and False Alerts  aCommunications Systems for Use in the GMDSS