An individual may not set or fish a trotline within 100 feet of another individual’s set trotline, collapsible crab trap, or net ring. The length of a trotline shall be measured along the bait line from the first bait to the last bait. In the coastal bays of the Atlantic Ocean and their tidal tributaries: An individual may not use or possess on board a vessel a trotline or trotlines with a baited portion more than 600 feet in length to catch or attempt to catch crabs for recreational purposes; or If two or more individuals are on a boat, not more than two trotlines with a baited portion more than 600 feet each may be used or possessed on board a vessel to catch or attempt to catch crabs for recreational purposes. In the Chesapeake Bay and its tidal tributaries: Trotline gear may only be used to catch or attempt to catch crabs: For commercial purposes by an individual licensed in accordance with Natural Resources Article, §4-701, Annotated Code of Maryland; or For recreational purposes by an individual licensed in accordance with Regulation .09 of this chapter; An individual licensed to catch crabs for recreational purposes may not use or possess on board a vessel a trotline or trotlines with a baited portion more than 1,200 feet in length to catch or attempt to catch crabs for recreational purposes; and The trotline gear used from the boat may not exceed 1,200 feet in length for the baited portion: Regardless of the number of individuals licensed to catch crabs for recreational purposes on a boat; or If the boat is licensed as a recreational crabbing boat. Buoy Requirements. A trotline shall have a three-dimensional buoy of the same color, size, and shape attached to each end. Buoys that have a spherical shape shall be at least 12 inches in diameter. Buoys that do not have a spherical shape shall be at least: 12 inches long; 10 inches wide; and 10 inches high. Buoys shall be marked with the owner’s: DNR id number, if recreationally crabbing in the Chesapeake Bay or its tidal tributaries; Name and address, if recreationally crabbing in the Atlantic Ocean, its coastal bays, or their tidal tributaries; or Commercial license number.