Portuguese ironclad Vasco da Gama armored belt that was thick on either end and thick amidships. The main battery guns were protected by thick barbettes. "Vasco da Gama" was laid down at the Thames Iron Works shipyard in London, Britain in 1875, and was launched on 1 December 1876. The ship was completed in 1878. She served as part of the coastal defense force that protected Lisbon, the Portuguese capital, and the mouth of the river Tagus. On 26 June 1897, "Vasco da Gama" participated in the Fleet Review at Spithead celebrating Queen Victoria's Diamond Jubilee. At the time, the ship was commanded by Captain
Vasco da Gama 1998. Later underwater excavations took place between 2013 and 2015 through a partnership between the Oman Ministry of Heritage and Culture and Bluewater Recoveries Ltd., a shipwreck recovery company. The vessel was identified through such artifacts as a "Portuguese coin minted for trade with India (one of only two coins of this type known to exist) and stone cannonballs engraved with what appear to be the initials of Vincente Sodré, da Gama's maternal uncle and the commander of the "Esmeralda"." Vasco da Gama Vasco da Gama, 1st Count of Vidigueira (; c. 1460s – 24 December 1524), was a Portuguese