The boats are given position reports only four times per day, at 0100, 0700, 1300 and 1900 (all times UTC). But once per leg, each team has the option to go into ‘Stealth Mode’ whereby its position report is withheld from the rest of the fleet (and us) for three consecutive position reports. This can be used to tactical advantage to make a break for what is perceived as better wind, or to hit a layline, or choose what side to pass an island, etc. The only restriction is that teams are not allowed to go into Stealth Mode when they are within 200 miles of the finish. The approach to the doldrums is a classic opportunity to utilise this tactic. Watch for it over the coming days.