Now a legal requirement, ship logs and records are recorded in either an Official Logbook or an unofficial record or logbook. But what is the difference between an Official Logbook and an unofficial log or record? And what are the requirements for an Official Logbook? This issue of Drill Down explains Official Logbooks for OSVs, when they are required, and when an unofficial logbook is suitable for record-keeping.
Source: USCG
Link: Latest ‘Drill Down’ – Official Logbooks