Mark 33 torpedo

{{Use dmy dates|date=September 2024}}

{{Infobox weapon

| name = Mark 33 torpedo

| image =

| caption =

| origin = United States

| type = Acoustic torpedo{{cite web | last= Jolie | first = E.W. | title = A Brief History of US Navy Torpedo Development: Torpedo Mine Mk33 | date = 15 September 1978 | url= http://www.maritime.org/doc/jolie/part2.htm | accessdate = 22 June 2013}}

| is_ranged = yes

| is_explosive = yes

| is_missile = yes

| service = never in service

| used_by =

| wars =

| designer = Bureau of Ordnance
General Electric
Exide

| manufacturer =

| design_date = 1943

| production_date=

| number = 30

| variants =

| weight = 1795 pounds

| length = 156 inches

| diameter = 21 inches

| range = 5000–19,000 yards

| filling = HBX

| filling_weight = 500 pounds

| detonation =

| engine = Electric

| propellant =

| speed = 12.5-18.5 knots

| guidance = Gyroscope

| launch_platform = Submarines and aircraft

}}

The Mark 33 torpedo was the first passive acoustic antisurface ship/antisubmarine homing torpedo intended for the United States Navy to employ a cast aluminum shell. It featured two speeds – high and low, and was meant to be launched from submarines and aircraft.

Production of the Mark 33 was discontinued at the end of World War II, but its features were incorporated into the Mark 35 torpedo.