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The Pre-Start
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Автор: Денис   
26.11.2009 09:44
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Dial Up

This is the typical pre-start manoeuvre that is often seen shortly after the five-minute gun when the teams enter the starting box. As the boats enter their respective ends of the start box, Yellow, on starboard tack, tries to maintain a collision course with Blue, who, on port tack, must keep clear.

The result is usually both boats slowly luffing from a downwind heading, up towards the wind through close-hauled, and into irons. While Yellow has the right-or-way, Blue must be given opportunity to keep clear.

Rule 10 and Rule 16 are the applicable rules.

A dial-up probably occurs in at least 60% of pre-starts.

While Blue is the burdened vessel in this situation, Yellow must not 'hunt' Blue too aggressively, or it is at risk of being penalised for not giving Blue opportunity to keep clear.

As the boats come up into the wind, Blue ensures it completes a tack onto starboard, even if just momentarily and now Yellow, as windward boat, is burdened to keep clear under Rule 11. Yellow becomes especially vulnerable here the longer the boats stay head to wind, as once they start drifting backwards the boats are very difficult to control.

The crew work on the front of the boat is critical when it comes to down speed, or no speed, manoeuvring. The helmsman will have no steering control, as with no boat speed, there is no water flowing over the rudder. Therefore the crew turns the boat by backwinding the jib (manually pushing the jib sail at the front of the boat over the 'wrong' side - the force of the wind pushes the bow in the opposite direction).

It is not uncommon for the boats to fall away on their respective sides of the start box, gybe around and approach again, repeating the dial-up procedure two or even three or more times.

If one team is able to bail out, and sail away on port tack, while the other is stuck with no speed, head to wind, it has gained a big advantage, and will try and gybe around, and approach its stalled opponent on starboard tack, with full rights. This can occasionally result on a penalty assessed against the stalled boat as it struggles live up to its obligation to keep clear, or, more often, it is pressed into a poor tactical position in getting out of the way.

Обновлено 26.11.2009 16:51