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).