EntityQ5225446· pop 6· linked from 36 articlesUSS MackerelSign in to save1953 T-1-class submarineConnectionsGeneral Dynamics Electric BoatCompanyship commissioningEntityT-1-class submarineEntityCubaCountryfishEntityFloridaEntityMarylandEntityConnecticutEntityPuerto RicoConceptCaribbeanEntitysubmarineEntityJacksonvilleEntityAnnapolisEntitypublic domainEntityUnited States NavyEntityWest IndiesEntitysonarEntityKey WestEntityknotEntitymilitary officerEntityCategories1953 shipsCold War submarines of the United StatesMaritime incidents in 1978Ships built in Groton, ConnecticutShips sunk as targetsShipwrecks of the Puerto Rico coastT-1-class submarines