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SM U-90 WWI sub is a boat accessible salt water dive site, located in Portsmouth, United Kingdom. The maximum depth is 91-100ft/28-30m.

The U90 was a WW1 German Submarine that actually survived the war. She was also very successful for the Germans sinking more than 3o ships including, infamously,the USS President Lincoln on which over 700 men lost their lives.When the war ended she was handed over to the British and it was decided that she should be sold as scrap. According to two websites she was broken up during 1919 – 1920, however, another report states that on route to the brerakers she sank and now rests in 30m of water about 17 miles from Portsmouth. All very curious. It is a bit of a trek to get there but well worth it.


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