EntityQ7871418· pop 5· linked from 145 articlesUSS MackerelSign in to save1940 Mackerel-class submarineConnectionsGeneral Dynamics Electric BoatCompanyship commissioningEntityWorld War IIConceptPennsylvaniaEntityVirginiaEntityMassachusettsEntityConnecticutEntityBostonEntityRhode IslandEntityPhiladelphiaEntityNazi GermanyConceptInternational Standard Book NumberEntitysubmarineEntityAnnapolisEntitybatteryEntityWayback MachineEntitypublic domainEntityelectric motorEntitytonneEntityAllies of World War IIEntityCategories1940 shipsFriendly fire incidents of World War IIMackerel-class submarinesMaritime incidents in April 1942Maritime incidents in May 1942Ships built in Groton, ConnecticutWorld War II submarines of the United States