What's the difference between an official log book and a regular ship's log?

An official log book documents personnel matters, disciplinary actions, injuries, deaths, and other events required under maritime law. A regular deck log records operational activities such as navigation details, weather, and position reports. Commercial vessels typically need both, whereas recreational vessels usually maintain only operational logs.

Do recreational boats need to keep a log book by law?

No federal law requires recreational vessels in U.S. waters to maintain a log. However, keeping a sailing log book offers major benefits including support for insurance claims, maintenance tracking, and legal documentation during incidents. The minimal effort involved often pays off when records are needed.

How long should you keep old logbooks?

Commercial vessels must retain logs for at least three years under international conventions, though some flag states mandate longer retention. Recreational boaters should keep logs indefinitely because they serve as valuable references for maintenance history, insurance claims, and vessel sales. Digitizing logs helps preserve them permanently with little storage space.

Can digital logbooks replace paper logbooks legally?

Many flag states permit electronic logbooks for commercial vessels if they meet requirements for data integrity, security, and backup. The U.S. Coast Guard accepts electronic logs that comply with recognized standards. Recreational boaters may use either format freely. Whichever you choose, maintain reliable backups to ensure long-term access.

What happens when you make mistakes in the ship's log?

Correct mistakes by drawing a single line through the incorrect entry so it remains readable. Add the correct information nearby, then initial and date the correction. Never erase or use correction fluid. Transparent corrections maintain credibility, while obscured entries can raise concerns about log tampering.