1 Three formulations
are set forth as guidance to Administrations concerning minimum draught
requirements for segregated ballast tankers below 150 m in length.
2 The formulations
are based both on the theoretical research and surveys of actual practice
on tankers of differing configuration reflecting varying degrees of
concern with propeller emergence, vibration, slamming, speed loss,
rolling, docking and other matters. In addition, certain information
concerning assumed sea conditions is included.
3 Recognizing the
nature of the underlying work, the widely varying arrangement of smaller
tankers and each vessel's unique sensitivity to wind and sea conditions,
no basis for recommending a single formulation is found.