A system for securing a crawler crane having a crane mounted to an undercarriage with a set of parallel tracks (28, 30) having endless treads (30, 32), the system comprising: first and second structural securements (12, 14) spaced at approximately a track-distance apart with respect to the crawler crane, each of the first and second structural securements (12, 14) including: a structural mat subsystem having four wide flange beams (94, 96, 98, 100, 102, 104, 106, 108) welded together with a plurality of crossbar members (110, 112, 114, 116, 118, 120) such that openings are formed between the wide flange beams (94, 96, 98, 100, 102, 104, 106, 108) and crossbar members (110, 112, 114, 116, 118, 120), a plurality of structural support members secured proximate the openings, the structural mat subsystem having a first end and a second end, the structural mat subsystem having a width greater than one of the tracks (26, 28) of the crawler crane, the structural mat subsystem having a length greater than one of the tracks (26, 28) of the crawler crane by at least 3.05 metres (ten feet), the structural mat subsystem having from the first end to the second end, a tie down region, an original crawler crane region, and an enhanced crawler crane region, the structural mat subsystem having a height configured to accept the crawler crane in forward drive thereon on the first end, and the tie down region having a plurality of surfaces for accepting a plurality of tie-downs (60, 62, 64, 66, 68, 70); and a plurality of transverse support members (40, 42, 44) coupling the first structural securement to the second structural securement such that the first and second structural securements are spaced at approximately the track-distance apart, wherein with respect to the first and second securements, the enhanced crawler crane region in combination with the original crawler crane region, and the tie down region shift the tipping fulcrum of the crawler crane toward the second end of the securement when the crawler crane is driven thereon and fastened thereto. first and second structural securements (12, 14) spaced at approximately a track-distance apart with respect to the crawler crane, each of the first and second structural securements (12, 14) including: a structural mat subsystem having four wide flange beams (94, 96, 98, 100, 102, 104, 106, 108) welded together with a plurality of crossbar members (110, 112, 114, 116, 118, 120) such that openings are formed between the wide flange beams (94, 96, 98, 100, 102, 104, 106, 108) and crossbar members (110, 112, 114, 116, 118, 120), a plurality of structural support members secured proximate the openings, the structural mat subsystem having a first end and a second end, the structural mat subsystem having a width greater than one of the tracks (26, 28) of the crawler crane, the structural mat subsystem having a length greater than one of the tracks (26, 28) of the crawler crane by at least 3.05 metres (ten feet), the structural mat subsystem having from the first end to the second end, a tie down region, an original crawler crane region, and an enhanced crawler crane region, the structural mat subsystem having a height configured to accept the crawler crane in forward drive thereon on the first end, and the tie down region having a plurality of surfaces for accepting a plurality of tie-downs (60, 62, 64, 66, 68, 70); and a structural mat subsystem having four wide flange beams (94, 96, 98, 100, 102, 104, 106, 108) welded together with a plurality of crossbar members (110, 112, 114, 116, 118, 120) such that openings are formed between the wide flange beams (94, 96, 98, 100, 102, 104, 106, 108) and crossbar members (110, 112, 114, 116, 118, 120), a plurality of structural support members secured proximate the openings, the structural mat subsystem having a first end and a second end, the structural mat subsystem having a width greater than one of the tracks (26, 28) of the crawler crane, the structural mat subsystem having a length greater than one of the tracks (26, 28) of the crawler crane by at least 3.05 metres (ten feet), the structural mat subsystem having from the first end to the second end, a tie down region, an original crawler crane region, and an enhanced crawler crane region, the structural mat subsystem having a height configured to accept the crawler crane in forward drive thereon on the first end, and the tie down region having a plurality of surfaces for accepting a plurality of tie-downs (60, 62, 64, 66, 68, 70); and a plurality of transverse support members (40, 42, 44) coupling the first structural securement to the second structural securement such that the first and second structural securements are spaced at approximately the track-distance apart, wherein with respect to the first and second securements, the enhanced crawler crane region in combination with the original crawler crane region, and the tie down region shift the tipping fulcrum of the crawler crane toward the second end of the securement when the crawler crane is driven thereon and fastened thereto.