Navatek Ltd.'s participation in the Volvo Ocean Race gives Hawaii yet another tie to what is known by some as the Super Bowl of ocean sailing, with not one, but two Towill brothers, who hail from Oahu, involved in the race. Sailor Mark Towill is general manager of Team Alvimedica, which last year picked up a $21 million sponsorship for the race from Alvimedica, a Turkish medical device company. His brother, Ian Towill, is an engineer at Honolulu-based Navatek Boat Builders, which provided Team Alvimedica...