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ILBE Improved Load Bearing Equipment
The ILBE Improved Load Bearing Equipment is a load carrying system designed to provide a durable and lightweight means for deployed U.S. Marines to transport individual combat clothing and equipment. It is intended to replace the MOLLE Modular Lightweight Load Carrying Equipment.
ILBE Improved Load Bearing Equipment
ILBE developed from U.S. Marine Corps dissatisfaction with the MOLLE Modular Lightweight Load Carrying Equipment. Evolutionary changes in MOLLE were not sufficient to meet Marines' requirements, so in 2003 the USMC investigated two new pack designs to upgrade the MOLLE in response to complaints about the original version. The selected designs were provided by commercial vendors Bianchi (Gregory) and Propper International (Arc'teryx).
Major proposed improvements over the MOLLE Modular Lightweight Load Carrying Equipment included durability, comfort of wear, reduced system complexity, reduced system weight and sustainability, and greater integration with the Outer Tactical Vest (OTV) of the Interceptor Multi-Threat Body Armor System. Compared to MOLLE, the ILBE can more easily be configured for the mission at hand and to maximize the mobility, survivability, and lethality of the Marine in combat environments.
Revised features of ILBE include:
The two new packs that were tested featured internal frames and were somewhat lighter with a much simpler design than the Marines' MOLLE pack. Arc'teryx weighed eight pounds four ounces and carried 5,000 cubic inches while the Gregory weighed nine pounds 10 ounces and carried 4,520 cubic inches. Field User Evaluation was conducted January through June 2003 when nine hundred systems from each vendor were tested across Marine units. Biomechanical testing was conducted at U.S. Army Soldier Systems at Natick, MA who also compared the performance of the ILBE candidates to the MOLLE system.
Improved Load Bearing Equipment (ILBE) Selected and Approved
On 15 January 2004 the ILBE design was approved and scheduled for procurement as a direct replacement for the MOLLE Modular Lightweight Load Carrying Equipment. The selected design was a modified Arc'teryx Bora 95 pack with a hydration system produced by Source Vagabond. Specifications are:
The family of ILBE packs includes:
ILBE systems were produced and delivered to the USMC by Propper International at a cost of about $600 each. During fielding, MOLLE and even the aging ALICE, or All-purpose Lightweight Individual Carrying Equipment, remained in service as the ILBE was phased in. By March 2006, over 96,000 ILBE had been fielded. Ultimately 238,000 ILBE packs suppliled active duty Marines plus additional packs for reservists.
During the development of the ILBE, the Marine Corps defined three load types that the equipment would be designed to accomodate. These are similar to equivalent definitions in US Army FM 21-18 (Foot Marches).Assault Load
The assault load is the load needed during the actual conduct of the assault. It will include minimal equipment beyond water and ammunition. From the human factors perspective, the maximum assault load weight will be that weight at which an average infantry Marine will be able to conduct combat operations indefinitely with minimal degradation in combat effectiveness.Approach March Load
The approach march load is defined as that load necessary for the prosecution of combat operations for extended periods with access to daily re-supply. The approach march load is intended to provide the individual infantry Marine with the necessities of existence for an extended period of combat. From the perspective of human factors, the maximum weight of the approach march load will be such that the average infantry Marine will able to conduct a 20-mile hike during a time frame of eight hours with the reasonable expectation of maintaining 90% combat effectiveness.Existence Load
The existence load is defined as that load taken from the point of origin into the assembly area. The existence load, for planning purposes, will be intended to support the individual from their pack when immediate re-supply is impossible. From the perspective of human factors, the maximum weight of the existence load will be such that the average infantry Marine will be able to conduct limited movement within the confines of Naval shipping, embark and debark aircraft or amphibious craft, and limited marching from the landing zone into a secured area.
ILBE continues to utilize the MOLLE Pouch Attachment Ladder System (PALS) for accessory mounting.
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