What does slack water refer to in dive planning?

Slack water refers to the period during tidal changes when the currents are at their weakest. This phase occurs just before or after the peak of high or low tide, offering optimal conditions for divers. During slack water, the lack of strong currents minimizes the risk of being swept away and makes it easier for divers to navigate and explore their environment safely. This is why divers often plan their dives around slack water to enhance safety and ensure more enjoyable dive experiences.

The other choices do not accurately define slack water. The period of strongest currents is the opposite condition and could make diving hazardous. The time when divers are required to resurface is typically related to dive time limits or air supply and does not correlate with the slack water concept. The moment before diving begins refers to the preparation stage and does not consider current conditions. Therefore, understanding slack water as the time when currents are weakest is essential for safe and effective dive planning.