American rocket launcher Sherman M4A3 CALLIOPE T34 COBI 2569 - Executive Edition WWII

You know that:

• The T34 rocket launcher was designed by Victor Hawkins in 1943 and he didn't mess around with it.
• He installed the rocket launcher design on the swivel turret of a Shermat M4A3 tank using side mounts and was done.
• The simple modification proved successful during testing, but even so, mass production never happened.
• Between 1944 and 1945, just over 30 were produced.
• The stand was named the Calliope after a certain type of organ used on riverboats on the Mississippi River.
• The Calliope fired a salvo of 60 M8 rockets of 115 mm caliber at ranges up to 5,000 meters.
• Interestingly, once the rocket mount was installed, the tank could not fire its gun. The superstructure was easily removable and was only used in some special operations.
• The crew fired the missiles from a safe distance using an electric cable with a switch.
• The rockets could be fired simultaneously or in batches of six.
• Gradually, other versions were developed that were capable of firing rockets of up to 183 mm calibre. 
• The firing accuracy was not high, but one tank with a rocket mount could replace a battery of 15 guns, although reloading was complicated and time-consuming.

Technical parameters:

• length 5,9 m (6,27 m with gun), width 2,62 m, height 2,74 m + rocket superstructure
• weight 30 255 kg
• frontal armour strength up to 64 mm/47°
• propulsion Ford GAA V8 petrol engine with 298 kW
• 5 forward speeds + 1 reverse speed
• maximum speed 41.8 km/h
• fuel tank capacity 660 litres
• range 209 km on the road
• wading depth 0.91 m
• main weapon 60x M8 rocket 115 mm
• maximum range 5 000 m
• turret turn time 3 60° 15 seconds
• secondary weapon 1x 12.7 mm Browning M2HB machine gun (300 rounds) + 2x 7.62 mm M1919A4 MG machine gun (4,750 rounds each)
• crew of 5