'MaerskKendal' is a rarity with its British flag, the 'LONDON' home port painted on its bow, its two British chief officers, and its portrait of the queen in the mess room, apparently common courtesy on British ships, but a little alarming to me.

There are few industries as defiantly opaque as shipping. Even offshore bankers have not developed a system as intricately elusive as the flag of convenience, under which ships can fly the flag of a state that has nothing to do with its owner, cargo, crew, or route.

Ships are obliged to take on harbor or river pilots - who provide specialized local navigation - when they approach a port, but in the canal, a Suez crew is also obligatory. The crew members are there in case the ship needs to be moored during the canal transit, but this rarely happens.

In every mess I find a friend, / In every port a wife.

Since the 1920s, when some U.S. cruise ships decided to fly a Panamanian flag to avoid Prohibition regulations, ships have commonly flown the flag of countries foreign to their owners. The benefits are obvious: lower taxes, laxer labor and safety laws.

More ships dock at the Port of Dubai than at any other port outside the U.S..