1858 he built the Ictineo I, a man-power driven submarine.
An improved design, the Ictineo II, followed on 1862. It was a 17m long, steam driven submarine of 65t of displacement, whose intended use was to ease the harvest of coral. It dived 13 times up to a depth of 30m. Due to financial problems, the Ictineo II was sold as scrap in 1868. A replica of the Ictineo II can be seen at the harbour of Barcelona.
Monturiol died September 6th 1885.
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