The bacterial cell division protein FtsZ polymerizes in a GTP-dependent manner to form a Z-ring that marks the plane of division. As a validated antimicrobial target, considerable efforts have been devoted to identify small molecule FtsZ inhibitors.
In a sense, the sea waybill is similar the bill of lading, which is the main shipping document. The sea waybill is important because it serves an alternative for a bill of lading for the purposes of shipping goods and having someone collect the goods on arrival at the destination port.
The wave buoy analogy is, however, made complicated by the fact that a ship (due to its relatively large inertia) filters wave excitations to a larger extent than real wave rider buoys, not to mention the more complex geometry of a ship hull and the speed-of-advance problem.