H-class submarine

H class submarine can refer to

• Holland 602 type submarine
• British H-class submarine - the 42 Holland 602 types built for British use and serving in the Royal Navy
• Danish H class submarine also known as Havmanden class - 407 tonne submarines of the 1930s serving in the Danish Navy
• United States H-class submarine - the nine Holland 602 that served in the US Navy.