Understanding Tides: Spring Tides, Neap Tides and Slack Water
Club presentation summary and resources
Date:
04 November 2026
Presented by:
Lee Ingram
Overview
Understand how the Moon, Sun and Earth influence tides and why this matters for coastal diving. Explores Moon phases, spring and neap tides, tidal range, flood and ebb streams, and the difference between high or low water and slack water. Covers tide tables, reference ports, tidal-stream information, local geography, weather and the limitations of the rule of twelfths. Includes visual explanations and discussion exercises to support informed dive planning using reliable local information.
Key topics covered
- Understand how the Moon, Sun and Earth influence tides and why this matters for coastal diving. Explores Moon phases, spring and neap tides, tidal range, flood and ebb streams, and the difference between high or low water and slack water. Covers tide tables, reference ports, tidal-stream information, local geography, weather and the limitations of the rule of twelfths. Includes visual explanations and discussion exercises to support informed dive planning using reliable local information.
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