Jack Tar is a common English term that was originally used to refer to seamen of the Merchant Navy or the Royal Navy, particularly during the British Empire. By World War I the term was used as a nickname for those in the US Navy. Members of the public and seafarers alike made use of the name in identifying those who went to sea. It was not used pejoratively, and sailors were happy to use the term to label themselves.

Hemp, or industrial hemp, is a plant in the botanical class of Cannabis sativa cultivars grown specifically for industrial and consumable use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants on Earth. It was also one of the first plants to be spun into usable fiber 50,000 years ago. It can be refined into a variety of commercial items, including paper, rope, textiles, clothing, biodegradable plastics, paint, insulation, biofuel, food, and animal feed.