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Harpoon

technology Maturity 5-7 Next article →

A harpoon is a long, spear-like projectile used for hunting. It is specifically designed to catch large fish or marine mammals. These animals include seals, sea cows, and whales. The tool is used to impale a target and secure it. This allows hunters to use an attached rope or chain to pull the animal back.

Inuit hunter with harpoon
Inuit hunter with harpoon

Beyond hunting, harpoons can serve as ranged weapons in naval warfare. They are essential tools for people who rely on the ocean for food.

The mechanism of a harpoon is different from a standard spear. A critical feature is its detachable head. This head is designed to toggle, or turn sideways, inside the animal's flesh. This movement prevents the line from pulling out of the target.

Harpon Unaaq MHNT ETH AC 198
Harpon Unaaq MHNT ETH AC 198

Inuit hunters use specialized builds for different tasks. They use short, fixed-foreshaft harpoons when hunting at breathing holes. They use loose-shafted harpoons when they need to throw the weapon. Some walrus harpoons feature ivory heads and wooden shafts wrapped in rawhide. They may even include an attached ice pick.

History shows that humans have used these tools for a very long time. The earliest known harpoons were found in the Katanda region of Zaire. These Semliki or Katanda harpoons date back 90,000 years. Scientists believe they were likely used to spear catfish. However, some experts dispute this date due to less accurate dating techniques. In Japan, spearfishing with poles was common during the Palaeolithic period.

Harpon 2010.0.3.5. Global
Harpon 2010.0.3.5. Global

Cave art in France from 16,000 years ago even shows drawings of harpooned seals.

Ancient literature also records the use of these weapons. The Bible mentions fishing spears in the book of Job. The Greek historian Polybius described hunting swordfish with a barbed, detachable head. In India, the Mincopie people have used harpoons with long cords for fishing since early times. Seafaring Harappans also used copper harpoons during antiquity. These various cultures all developed ways to use the tool for survival.

The history of whaling saw many technological changes. In 1737, the British South Sea Company used cannon-fired harpoons. By the 1820s, William Congreve designed a rocket-propelled whaling harpoon. These early explosive devices were called bomb lances. They were designed to explode on contact to kill the whale.

Whaling Harpoons 1887
Whaling Harpoons 1887

However, many whales still sank before they could be retrieved. This was a major problem for early whalers.

In 1870, Svend Foyn changed whaling forever with a new invention. He patented a modern exploding whaling harpoon and gun. His design used a grenade tip that exploded inside the whale. He also used a shaft connected to the head with a moveable joint.

Manner in which the natives of the East Coast Stirke Turtle
Manner in which the natives of the East Coast Stirke Turtle

This system helped keep whales afloat after they were killed. This development, along with the steam engine, started the modern age of commercial whaling. Whalers could now hunt faster species called rorquals.

Modern harpoon technology has evolved into several different forms. Today, a standard whaling harpoon uses a deck-mounted launcher, which is mostly a cannon. The projectile has an explosive penthrite charge attached to a thick rope. The spearhead has sharp spikes to prevent it from sliding out of the blubber. Divers now use a different version called a hand-held speargun. These are powered by pressurized gas, springs, or elastic bands.

Whaling Harpoons 1887
Whaling Harpoons 1887

Even space exploration has attempted to use this technology. The Philae spacecraft carried harpoons to help it anchor to a comet. The probe was visiting comet 67P/Churyumov–Gerasimenko. The goal was to keep the probe attached to the surface. Unfortunately, the harpoons failed to fire during the mission. This shows how the concept of the harpoon is applied even in the most extreme environments.

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🖼️ Images & Media (5)
File:Inuit hunter with harpoon.jpg
Inuit hunter with harpoon.jpg
File:Harpon Unaaq MHNT ETH AC 198.jpg
Harpon Unaaq MHNT ETH AC 198.jpg
File:Harpon 2010.0.3.5. Global.JPG
Harpon 2010.0.3.5. Global.JPG
File:Manner in which the natives of the East Coast Stirke Turtle.jpg
Manner in which the natives of the East...
File:Whaling Harpoons 1887.jpg
Whaling Harpoons 1887.jpg
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