The open database
Library
Author
Organization
Publication year
Technical topic
3 entries
Navigation & Seamanship
Introduction to Tides
A practical seamanship lesson on tidal forces, spring and neap tides, tidal datums, streams, the Rule of Twelfths, and safe use of tide predictions.
29 Sept 2026 Ship's Almanac 2026 tides
Navigation & SeamanshipPassage Planning: The Four Stages
Appraisal, Planning, Execution, and Monitoring — the IMO framework for a safe berth-to-berth passage plan.
20 Sept 2026 Ship's Almanac 2026 navigation
Navigation & SeamanshipDuties of the Officer of the Watch
The standing responsibilities of the OOW: safe navigation, collision avoidance, and the condition of the vessel at all times.
20 Sept 2026 Ship's Almanac 2026 watchkeeping