Fig. 1. Cumulative distribution of source levels with two management options
Cumulative distribution of source levels for the ship population (solid curve). Two management options for halving of the total power radiated by the fleet are depicted by vertical lines: removing the 15% of ships with source levels > 179.0 dB (dashed line); and reducing source levels of 42.8% of the ships to 175.4 dB (dotted line).