Hemp for shipping

After wood, hemp was the material most used in ship-building. No other natural fibre can withstand the forces of the open ocean and the ravishes of salt water as well as hemp is able to.

Hemp made ships watertight

Hemp was used for a ship’s sails, rigging and other ropes. Hemp was also treated with tar and used to fill the seams between the planks of a wooden hull in order to make ships watertight. This process is called caulking. Sailors’ clothes were often made of hemp, and captains kept the ship’s log on hemp paper. Lamps used hemp oil, allowing the crew to read the Bible (which was printed on hemp paper) below decks. In order to make sure there was food on board, tonnes of hemp seed were an essential part of the cargo; this also enabled the crew to survive in the event of shipwrecks.

An economic superpower

The Netherlands was an economic superpower in the 17th century as a result of shipping, and without hemp, there would have been no Dutch Golden Age!

Detail of a landscape by Herman Safteven (on display in Barcelona), with workers repairing a ship and making it watertight with hemp fibre.

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Industrial hemp, or simply hemp, are the names most commonly given to fibre-producing strains of cannabis which contain less than 0.2% THC and have no psychoactive effect when consumed - unless you are able to ingest several tons of buds simultaneously - although they are the s

Hemp fibres are among the strongest soft fibres in the plant world. Humans discovered early on how to fabricate thread, rope and textile from it.