What is the 50-90 rule in sea kayaking?
What is the 50-90 rule in sea kayaking? The 50/90 rule states that: We expect zero flow speed as the tidal stream changes direction (slack water) One hour later, the flow attains 50% of maximum speed. Two hours after slack water, the flow attains 90% maximum speed. The 50/90 Rule What happens to the flow […]
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