Correlation of Ship and Model Manoeuvrability, and Effect of Steering Speed upon Manoeuvrability, in Case of Super Tankers

Abstract

(1) According to zig-zag tests of three sister super tankers with 0.82, 6.0 and 2.64 for C_b, L/B and B/d respectively, it was revealed that, even for the actual ships, so called abnormal patterns of K and T appeared contrary to our expectation. (2) It was confirmed by experiments on other ships that steering speed provided by the classification society regulations was unnecessarily severe for such large-sized tankers.