DAY MARKS FOR VESSELS DAY MARKS ON VESSELS MOORED OR AT ANCHOR INTERNATIONAL Not provided. The signal of one black ball must be carried by a steam vessel under way under sail only, as provided in Art. 14. INLAND Vessels of more than 300 gross tons propelled by machinery when moored or anchored in a fairway or channel where traffic is liable to congestion or confusion shall display between sunrise and sunset on the forward part of the vessel where it can best be observed from other vessels one black ball or shape not less than 2 feet in diameter. § 312.23 NOTE. The same signal may be used to indicate a steam vessel under way under sail only, as provided in Art. 14. GREAT LAKES Same as Inland for vessels at anchor. War Dept. Regulations, No. 6 WESTERN RIVERS Same as Inland for vessels at anchor. War Dept. Regulations, No. 6 DAY MARKS ON VESSELS NOT UNDER COMMAND INTERNATIONAL A vessel which from any accident is not under command * * * shall by day carry in a vertical line one over the other, not less than six feet apart, where they can best be seen, two black balls or shapes, each two feet in diameter. INLAND Art. 4 Not provided. The signal of two black balls is used by a suction dredge under way with suction down, and by hydrographic surveying vessel at anchor. § 312.21, 312.33 GREAT LAKES Not provided. The signal of two black balls is used by a suction dredge under way with suction down. War Dept. Regulations, No. 4 WESTERN RIVERS Not provided. The signal of two black balls is used by a suction dredge under way with suction down. War Dept. Regulations, No. 4 INTERNATIONAL INLAND DAY MARKS Not specifically covered. Do not use two black balls. GREAT LAKES Not specifically covered. Do not use two black balls. WESTERN RIVERS Not specifically covered. Do not use two black balls. DAY MARKS Fishing Vessel With Nets, Lines, or Trawls Out, Making Way, Showing Basket INTERNATIONAL INLAND GREAT LAKES WESTERN RIVERS DAY MARKS FOR MINE SWEEPER WITH SWEEP INTERNATIONAL Not in rules, but signal used by naval services in all waters to indicate mine sweeper towing sweep is 3 black balls, one at fore-masthead and one at each yard arm. INLAND Same as International. GREAT LAKES Same as International. WESTERN RIVERS Same as International. DAY MARKS FOR FISHING VESSELS WITH GEAR OUT INTERNATIONAL All vessels or boats fishing with nets or lines or trawls, when under way, shall in daytime indicate their occupation to an approaching vessel by displaying a basket or other efficient signal where it can best be seen. If vessels or boats at anchor have their gear out, they shall, on the approach of other vessels, show the same signal on the side on which those vessels can pass. INLAND Art. 9(k) Not provided, but proper in waters navigable by seagoing vessels. Enacting Clause and Art. 9(k), International GREAT LAKES Not provided, but proper in waters navigable by seagoing vessels. Enacting Clause and Art. 9(k), International WESTERN RIVERS Not provided, but proper in waters navigable by seagoing vessels. Enacting Clause and Art. 9(k), International DAY MARKS FOR VESSELS MADE FAST ALONGSIDE OR OVER WRECK INTERNATIONAL Not provided, but not-under-command signal is proper. INLAND Art. 4 Steamers, derrick boats, lighters, or other types of vessels made fast alongside a wreck, or moored over a wreck which is on the bottom or partly submerged, or which may be drifting, shall display by day two shapes of the same character and dimensions and displayed in the same manner as required by § 312.18, except that both shapes shall be painted |