A cargo ship or freighter is any sort of ship that carries goods and materials from one port to another. Thousands of cargo carriers ply the world's seas and oceans each year; they handle the bulk of international trade. Cargo ships are usually specially designed for the task, being equipped with cranes and other mechanisms to load and unload, and come in all sizes. Specialized types of cargo vessels include container ships and bulk carriers. ( Tankers and supertankers are also cargo ships, although they are habitually thought of as a separate category. )
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Goody bags come in several lengths and sizes, but three feet ( yellow mesh ) is by far the handiest and most popular size. Bigger bags are too much of an encumbrance, and if filled to capacity, say with mussels, become too heavy to safely carry underwater.
Goody bags come in a variety of materials. Open nylon mesh is the most common and drains instantly when you exit the water. It is also the best for dragging mussels behind the boat. Canvas is good for spearfishing, as it keeps the fish slime off you, yet still drains reasonably well. It can also have a calming effect on your prey, resulting in less thrashing about. Of course, with a canvas bag, it is more difficult to admire your catch during your hang at the end of the dive. Nylon cloth is used for small tool bags. It is the strongest of all, but drains very poorly. A large nylon bag full of water is a very heavy load to drag up a dive boat ladder.
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