Abstract
Superships require special deep-water berthing and moorings, and special alignments of channels. Their wide bams, flat bottoms, restricted maneuverability, long stopping distance and associated hydrodynamic phenomena such as sinkage, bank suction and ship interaction during meeting pose very serious safety problems. The performance of very large ships in restricted waters, in following the channel and the unexpected effects of maneuvering in conjunction with forces affecting vessel are analyzed. Specific examples are cited from the field and tentative channel design data and criteria for horizontal clearance, slope of the slides, effects of depth and currents are provided. The use of superships may speed techniques and applications of nuclear excavations for channels and for maneuvering areas. If applied, these new techniques could create waterways and harbors of adequate depth and area at low cost.
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