Rules of the Department of Commerce, and Supplemental Regulations of the War Department Governing the Display of Signals On, and the Operation Of, All Craft and Accessories Working on Wrecks ...: In All Harbors, Rivers, and Inland Waters, Except the Great Lakes ... 1928 |
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... pipe or operating on submarine construction or excavation . Vessels which ... line not less than 3 feet and not more than 6 feet apart , the upper ball to ... line not less than 3 feet nor more than 6 feet apart and not less than 15 feet ...
... pipe or operating on submarine construction or excavation . Vessels which ... line not less than 3 feet and not more than 6 feet apart , the upper ball to ... line not less than 3 feet nor more than 6 feet apart and not less than 15 feet ...
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... pipe lines . Pipe lines attached to dredges , and either floating or supported on trestles , shall display by night one row of white lights not less than 8 feet nor more than 12 feet above the water , about equally spaced and in such ...
... pipe lines . Pipe lines attached to dredges , and either floating or supported on trestles , shall display by night one row of white lights not less than 8 feet nor more than 12 feet above the water , about equally spaced and in such ...