The largest rocket employed operationally by the US during WWII, Tiny Tim was an 11.7-inch diameter solid propellant weapon with a massive 300lb warhead. First fired in 1944, Tiny Tim proved too powerful to fire from rails, and the weapon had to be dropped and then ignited by a lanyard. Tiny Tim was too late for projected use against German V-1 sites in Europe, and was only able to be employed in the final stages of the Pacific fighting, being qualified for use by the F6F, F4U, and SB2C. The weapon was first used in anger against targets on Okinawa and the Japanese mainland itself from VBF-10 aircraft flying from the USS Intrepid.
Tiny Tims actually did see use against a heavy naval target; in July 1948 the old battleship Nevada, relegated to a target hulk after the Bikini A-bomb tests, was struck by Tiny Tims fired from F7F-4Ns and F6F-3Ns, before sinking from damage incurred from torpedo hits.
In August 1950, the Tiny Tim was use din Korea for the first time, with F4Us using the massive rockets to destroy the Han River Bridge. The following spring, Skyraiders armed with Tiny Tims destroyed to Hwacheon Dam.
Photo sequence: Tiny Tim penetrates armor target at Inyokern. All Hands February 1947 p.38
Photo:AD-1 Skyraider with HVARs, Tiny Tims Naval Aviation News January 1948 p.3
Photo: F4U with Tiny Tims. Naval Aviation News October 1950 p.8
Photo of an AD-2 armed with a pair of Tiny Tims and a dozen HVARs. Modern Military Aircraft Anatomy p.181
True Details made a 1/48 scale Tiny Tim