US - US Marines M777 Lightweight Howitzer

 Source: Military Footage Archive - MFA

The Ultralightweight Field Howitzer (UFH), designated M777 in the US, was selected to replace the existing inventory of M198 155mm towed howitzers by a joint US Army / Marine Corps initiative in 1997. M777 howitzer A1 and A2 variants: The M777 is the artillery system for the Stryker Brigade Combat Teams (SBCT). The M777 is normally operated by a crew of eight men but can be operated with a reduced detachment of five. The systems fitted with the digital fire control system are designated M777A1, and those with the software update that allows the firing of the Excalibur projectile, M777A2. U.S. Marines with 1st Battalion, 12th Marines, 3d Marine Division, fire an M777 A2 Howitzer as part of Battalion Distributed Operations Course during Service Level Training Exercise 1-22 at Marine Corps Air Ground Combat Center Twentynine Palms, California, Oct. 13, 2021. 1st Battalion, 12th Marines demonstrated their ability to quickly emplace and respond, enabling 1st Battalion, 3d Marines to accomplish key objectives.

US M777 155mm Howitzer

Source: the Military Lovers

The M777 howitzer is a towed 155 mm, Ultralightweight Field Howitzer (UFH), designated M777 in the US, was selected to replace the existing inventory of M198 155mm towed howitzers by a joint US Army / Marine Corps initiative in 1997 and it is used by the ground forces of Australia, Canada, India, Saudi Arabia and the United States. It made its combat debut in the War in Afghanistan.

With a weight of 4,200 kg (9,300 lb), the M777 is 41% lighter than the 7,154 kg (15,772 lb) M198 howitzer it replaces. Much of the weight reduction is due to the extensive use of titanium. The M777 can be transported by helicopter sling-load, transporter aircraft such as the C-130, or towed by air-braked vehicles weighing over 2.5 tonnes (2.8 short tons), such as the FMTV and MTVR. Specifications :

Mass : 4,200 kg (9,300 lb) Length : 10.7 metres in deployed configuration or 9.5 metres in towed configuration Barrel length : 5.08 m (16.7 ft)/L39 Travel : 9.5 m (31 ft 2 in)

Crew : 7+1

Shell : M107, M795, ERFB, M982 Caliber : 155 mm (6.1 in) Carriage : Split trail Elevation : 0° to +71.7° Rate of fire : - Normal: 2 rpm - Maximum: 7 rpm Muzzle velocity : Charge 8S: 827 m/s (2713.25 ft/s)

Effective firing range : - M107: 24 km (14.9 mi) - ERFB: 30 km (18.6 mi) base bleed - M795: 28.7–37 km (17.8- 23 mi) - Excalibur: 40 km (25 mi)

 

US - M777 Howitzer Heavy Artillery Raid

 Source: Military Footage Archive - MFA

Heavy Artillery Raid - M777 Howitzer in Action | MFA

U.S. Marines with 2d Battalion, 10th Marine Regiment, 2d Marine Division, 2nd Landing Support Battalion (LSB), 2nd Marine Logistic Group and Marine Heavy Helicopter Squadron 461, 2nd Marine Aircraft Wing conduct an artillery raid at Camp Lejeune, N.C., April 28, 2021.

The Marines 2d LSB training in conjunction with 10th Regiment during Exercise Rolling Thunder 21.2, where 10th Marines employed distributed fires via simulated Expeditionary Advanced Bases to increase combat readiness against a peer competitor.

India - Firepower 2020

Source: FUTURE UNIVERSE

The guns being inducted are the K9 Vajra and the M777. Both are of 155 mm, with the Vajra being a tracked self-propelled gun and the M777 a light weight howitzer which can be carried underslung by a helicopter. Both guns can fire upto a range of 30 kms. The quantity being inducted are 100 of the Vajra and 145 of the M777. The Vajra is 52 calibre, while the M777 is 39.

The Vajra is a variant of the South Korean K9 Thunder and is being manufactured by L and T defence. 10 guns were bought from South Korea and the balance are being manufactured in the company’s plant near Pune. Twenty-five M777 guns would be imported in fly-away condition and the balance 120 would be manufactured by Mahindra Defence.

The Vajra is destined for the plains and deserts and would form part of the strike corps. Being self-propelled they would operate alongside armoured formations and provide much needed firepower. For a long time, these formations lacked requisite firepower with matching mobility. There were attempts at mix and match including mounting the 130 mm barrel on an Arjun tank chassis, but all these had limited success.

The M777 is ideal for the mountains where with its light weight, better manoeuvrability and helicopter-portability, it can be deployed faster and far more forward enhancing the engagement range. Thus, they would enhance firepower in a region where spread of deployment restricts fire support to troops holding ground in the defensive role.

There are other modernisation programmes in the pipeline for the artillery. Last week, ordnance factories were given a contract for upgrading 300 vintage 130mm guns to 155 mm/ 45 calibre. These would then equip 15 artillery regiments. This upgrading is to be completed by 2022. The upgradation involved changing the barrel, adding new sighting and loading systems, enabling better accuracy and enhanced rate of fire.

The upgrading costs 70 lakhs per gun and is one-fifth the cost of a new piece. Once upgraded, the range of the gun would increase from its present 29 Kms to 39 Kms. Its lethality would also increase by 300% as the new shell would have 8 kg of TNT as compared to 3.4 earlier. These would be employed in the plains and desert sectors.

Simultaneously trials are on for the Dhanush artillery guns, the Indian version of the Bofors, based on the transfer of technology from the original manufacturer, AB Bofors. These are also 155 mm/ 45 calibre. In case the trials are successful and there are no major shortcomings, firm orders would be placed for 300 Guns.

In addition, the Advanced Towed Artillery Gun System (ATAGS) is also in the process of different phases of trials. This is another 155 mm/ 52 Calibre gun system being developed jointly by the DRDO in collaboration with the private sector. The private concerns involved are Bharat Forge, Tata power strategic engineering division and Mahindra defence naval systems. The gun during its earlier trials had set a world record of 48.074 Kms for a gun of its calibre. This has recently been surpassed by a new weapon system being developed in the US. An initial order for 40 is expected.

The latest to commence trials is the Mounted Gun System, developed by the Gun Carriage Factory, Jabalpur. It was first displayed at the Defexpo in Chennai in April. The system is also 155mm/ 52 calibre, mounted on a multi-wheeled truck and can be deployed and prepared for firing much faster. It has a range of 40 Kms.