Modular self-elevating sectional barge (MES-C7) jackup platform for inland, port and nearshore marine construction and maintenance — terminals, jetties, ports, breakwaters, bridges, land-to-marine cable/pipeline outfalls and offshore facilities. Provides 5,600 ft² unobstructed deck, 440 US ton variable deck load, 3,070 lb/ft² deck strength, up to 100 ft water-depth operation, central/local jacking, 4‑point mooring, redundant hydraulic pumps and manual controls.