as a csd has a hull 5 that preferably includes at least a fore section platform 10 and an aft section platform 20 as discussed in greater detail below with respect to fig2 the platforms 10 20 are comprised of a plurality of interconnected pontoons 11 the platforms 10 20 are preferably connected to one another by at least two substantially parallel pipe sections 30 each pipe section 30 is preferably formed from a series of interconnected standard industrial pipes 31 a and 31 b each pipe 31 a and 31 b preferably has sealed u201c blind u201d closed flanges best seen in fig4 b the hull 5 is illustrated to include an additional pontoon 11 positioned between the aft and fore section platforms 10 20 but could be eliminated or replaced by several pontoons sections 11 the pontoons 11 may be made from any suitable material preferably ship building steel the size of the pontoons 11 are preferably the same dimensions as standard cargo containers or a high cube u201c hicube u201d containers e g 20 ft l u00d7 8 ft w u00d7 4 ft h 20 ft l u00d7 6 ft w u00d7 8 ft h 20 ft l u00d7 8 ft w u00d7 8 ft h 40 ft l u00d7 8 ft w u00d7 4 ft h 40 ft l u00d7 8 ft w u00d7 6 ft h 40 ft l u00d7 8 ft w u00d7 8 ft h to facilitate convenient transportation of the pontoons in this manner conventional container corners lockings may be mounted on the corners of the pontoons to allow them to be handled and transported in the same manner as standard containers a dredge ladder 40 is pivotally secured at its rear most end aft end to the.