Direct view of the Peral submarine at La Carraca Naval Base

Sea trials began in January 1889. The most important was the simulated attack on the cruiser Colón, on June 23. During this time, there were a number of stumbling blocks, both for the submarine and for Peral. However, all of them were successfully overcome.

The recently-appointed Navy Minister Beránger created a new Technical Commission which, despite the submarine’s successful tests, put in place a series of conditions that were difficult to fulfil. These challenges had the express purpost of hindering or stopping the project. Despite Peral’s best efforts (including a proposal for a larger submarine) the Naval Board shelved the project.