Nature And Extent Of Fouling Of Ships Bottoms

Excerpt from Nature and Extent of Fouling of Ships' Bottoms It is the practice of most shippmg concerns to' 'clean the bottoms of their vessels every six or eight months In or'dei' to do this the bottoms are exposed to view, either by the use of dry docks or marine railways. -the' former are of two types - the granng dry dock and the floating dry dock: Lighter ci'aft frequently are removed from the water by a marine railway. The dost. Of maintaining and operating such equipment can be charged largely to fouling The large sums of money involved can be realized When one learns that it costs approximately $100, 000 to dry-dock, clean, and paint the bottom of a vessel s11'ch as the Leviathan or the Majestic, for these ships have more than an acre of surface exposed to the action of the sea and Which must be cleaned'. And painted' every time these vessels are dry docked. It must not be forgotten, also, that during the period 111 dry dock the cost of maintaining the ship and its crew remains constant, While the operating income is reduced to nothing. The time spent 111-dry dock varies With conditions from three days to three weeks, or more; but for the ships listed in this report the average is seven or eight days. This precess of cleaning 1s illustrated lin Figure 1. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.