Keeping a logbook: duty, habit or convenience?

Logbook — obligation, habit, or convenience?

A logbook records what happened on board: course, position, weather, manoeuvres, crew. Depending on flag and situation it may be mandatory, recommended, or simply good skipper practice.

When a logbook may be required

• Commercial voyages, charter with contractual requirements
• Regulatory or insurance requirements
• Racing rules

For many private passages there is no daily “logbook police” — documentation still pays off after damage, disputes, or learning from mistakes.

What a good logbook delivers

• Traceability: What happened when and where?
• Crew information: watch changes, anchoring, harbour
• Engineering: engine hours, maintenance notes (depending on setup)
• Navigation: course corrections, GPS, bearings

In NauticCalc: automatic events with GPS, many event types, export — see Logbook feature.

Paper vs. digital

Many skippers combine: brief paper entry plus digital log for detail.

GPS and logbook

Position and timestamps can be captured automatically — data stays on the iPhone, no cloud requirement. Context for course correction and later review.

→ GPS position

Common mistakes

• Logbook only on the last day of the passage
• No time/time zone recorded
• Weather and current not logged although relevant for ETA
• Screenshots only, no structured export

Summary

Keeping a logbook is rarely pure bureaucracy — it is habit with benefit: safety, crew communication, and learning. Digitally, NauticCalc simplifies capture and export without forcing your data into a third-party cloud.

Further reading: Logbook in the app · GPS position · Offline at sea