Possible Clues:

• Australia/New Zealand separator
• British island protected by French vessel on American body of water
• Like island in East, turbulent part of Pacific
• Chap filling small cup with a large quantity of water
• Initially they like minister's house being next to a stretch of water
• Deep division between Melbourne, Victoria and Wellington?
• When crews are in drink, in the main!
• Like chap's drink to be taken outside - it's wet
• A second chap's drowning in the drink, an arm of the Pacific
• Manatees migrating east for a wild stretch in the Pacific