PPL PHOTO AGENCY - COPYRIGHT RESTRICTED Dateline 19/3/08 - Plymouth. British adventurer Bob Beggs at the launch of his 'Against the Floe' challenge to be first to sail through the Northwest Passage and circumnavigate North America. He and two crew will be sailing a 29ft (8.4m) catamaran designed by Darren Newton, which is currently under construction. Beggs plans to set sail from Plymouth in June and must complete the first stage of this 20,000 mile voyage through the North West Passage within