The 6 inches tube M1905 has been initially developped for coastal defence fortifications. However, the General Preshing soon understood that the US Expeditionary Forces in Europe would need a long range heavy gun, and sollicited the quick creation of such a gun.

Similarly to what happened in most of the other fighting countries, this naval gun was adapted to terrestrial fights by mounting it on an improvised carriage. Numerous US coastal fortifications were therefore disarmed, and the new '6 inches M1905 guns', whose range had been improved by increasing the propulsive charge, were sent to France.

Because of its weight, this gun had to be towed by mechanical means. It is the same excessive weight that induced the US expeditionary forces in Europe to never use this gun, that stayed in depot, and prefer the wonderful and modern French 155 GPF.

Main characteristics :

• Weight in firing position : 9948 kg
• Calibre : 152.4 mm
• Tube length : 50 calibres
• Projectile weight : 41.5 kg
• Initial velocity : 792 to 914 m/s (depending on the charge)
• Maximum range : 16642 m
• Elevation range : 0 / +40 degrees (+60 degrees by burying the trail)
• Elavation range : unknown