The HNoMS Vidar was a Vale-class gunship built for the Royal Norwegian Navy at Horten Naval Yard in 1878. She was one of a class of five gunboats - the other ships in the class was Vale, Brage, Nor and Uller. Vidar was, in addition to the heavy, muzzle-loading main gun, armed with a small 'Quick Fire' gun and an early automatic gun, similar to the Gatling gun. Later Vidar, like her sister ships, was rebuilt as a minelayer, and she served in this role when the Germans invaded in 1940.
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