How to sail in light winds and tide

Olympian and in-demand professional sailor Ben Saxton gives Andy Rice his five best tips for racing in light winds and tide

The lighter the breeze, the more significant the effects of any current or tidal flow. Ben Saxton has raced every kind of boat, from foiling catamarans to planing dinghies to displacement keelboats, so few people are better qualified to give advice on how to sail in light winds and tide.

As Ben Saxton says, whatever you’re racing, you need to be aware of the direction of the current in relation to the course, and take every opportunity to note when the tide might be on the turn.

“Every single mark that you go around, take a second or two to see what the tidal flow is,” he advises. “Use lobster pots, moored boats, or even the choppiness of the water to tell you what the direction of flow is and if it’s on the turn. The angle of the committee boat is a great indicator at start time, and if you’re on bigger boats, you can use the instruments to look at your speed and course over ground compared with course and speed through the water.”

Rig for the current

The direction of tide affects your rig setup for two reasons. First, if the tide is with the wind the water is flat so you can set up with flatter sails. If the tide is against the wind the water will be more choppy, so you set up with deeper sails and more twist because then you accelerate faster. Secondly, the apparent wind is much higher if the current is pushing you upwind. If you’re sailing in five knots of true wind you might set up for seven or eight knots of breeze, but with current flowing from the direction of the wind you’d be set up for three to five knots.

Current taking you upwind?

Calling accurate laylines is hard enough as it is, but it becomes even more critical in a tidal situation. When the current is pushing you upwind, make sure you under-lay the layline, especially in a keelboat where extra tacks aren’t too expensive.

Britain’s Dylan Fletcher and Stu Bithell in light winds at Tokyo 2020. Photo: Sailing Energy / World Sailing

What you absolutely must NOT do is overstand your approach to the windward mark because now you’re battling against the current while your rivals are being pushed up beneath you.

Current taking you downwind?

You know that scenario where everyone is short-tacking up the shore to stay out of adverse tide for as long as possible. Eventually you have to make the break into open water and hope you’ve correctly judged your layline. If you’re leading the charge at least you’re in clear air, but you’ve got no accurate gauge of how you’re doing until you start eyeballing the windward mark with a transit behind.

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