EntityQ5631178· pop 6· linked from 21 articlesHMS A4Sign in to save1903 A-class submarineConnectionssubmarineEntityWorld War IConceptflagEntitychlorineEntityInternational Standard Book NumberEntityWayback MachineEntitybellEntityPortsmouthEntityexplosionEntityRoyal NavyEntitylieutenantEntityVictoria CrossEntityship captainEntityBarrow-in-FurnessEntitydinghyEntitySpitheadEntityVickersEntitynaval operations in the Dardanelles CampaignEntityHMS A1Entityboat hookEntityCategories1903 shipsA-class submarines (1903)British submarine accidentsRoyal Navy ship namesShips built in Barrow-in-FurnessWorld War I submarines of the United Kingdom