Routes, Rails & Runways
The canals, railways and machines that shortened the world.
Which canal connects the Mediterranean Sea to the Red Sea?
Almost everything you own arrived by sea. The trade has a precise vocabulary, and most of it has a reason.
Shipping is the least visible of the big industries and the one everything else depends on. Roughly four fifths of world trade by volume moves on water, in a fleet crewed by a few hundred thousand people most of whom never appear in the story of the goods they carry. The terms used aboard are old, but they encode real constraints — how deep a hull sits, how wide a lock is, what happens when a cargo shifts. These ten questions cover the working language: the marks on a hull, the measures of size, the ship types and the arrangement of registration that decides whose law applies in the middle of an ocean. Several of the answers explain why a particular disaster happened, or why it stopped happening.
Every question in this quiz is listed below with its correct answer and the reasoning behind it. Play first if you would rather not see the answers — or read through as a study sheet.
Play it insteadAnswer: B. The left and right sides when facing forward
Why: Starboard comes from the steering oar once hung over the right side. Ships therefore tied up with the other side against the quay, which is where "port" comes from.
Answer: A. The maximum depth to which it may safely be loaded
Why: Samuel Plimsoll campaigned it into British law in 1876 against deliberate overloading. Separate marks allow for different waters, since a hull floats higher in salt than in fresh.
Answer: D. The depth of hull below the waterline
Why: It decides which ports and channels a vessel can enter at all. Beam, its width, is the dimension that limits it in canal locks.
Answer: C. Its total enclosed volume
Why: Despite the name it is a measure of space rather than weight. Deadweight tonnage is the figure that describes what a ship can actually carry.
Answer: B. Loose cargo such as grain, coal or ore
Why: The holds are plain boxes filled by conveyor or grab bucket. Cargo shifting in a seaway is a serious hazard, which is why loading is calculated hold by hold.
Answer: A. Vehicles to drive straight on and off over ramps
Why: The design saves hours in port but leaves one long undivided vehicle deck. Water loose on that deck can capsize a ship quickly, a lesson drawn from several disasters.
Answer: D. A unique identity for that particular light
Why: Each light has its own character of flashes and pauses, listed in charts and pilot books. Colour and sector are used as well, to mark which water is safe.
Answer: C. In a country other than the owner's, usually for lighter regulation
Why: Panama, Liberia and the Marshall Islands hold enormous registries by this route. The flag determines which country's labour and safety law applies once the ship is at sea.
Answer: B. Container capacity
Why: It stands for twenty-foot equivalent unit, the size of the original standard box. Most containers moved today are forty feet long and count as two.
Answer: A. The position from which the ship is navigated and commanded
Why: The name survives from paddle steamers, where a platform was built across between the paddle boxes. On cargo ships it is usually placed well aft to leave the deck clear.
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