The correct answer is B) rotary loads. The Cantilever Beam Load Chart for the COASTAL DRILLER, which is a type of offshore drilling unit, provides information on the limits for key parameters that affect the structural integrity of the vessel, including the hook setback conductor tension and rotary loads. Rotary loads refer to the forces and stresses placed on the drilling equipment and structure due to the rotation of the drill string and drill bit during the drilling operation. These loads are critical design considerations that must be accounted for to ensure the safety and stability of the offshore drilling unit. The other answer choices, such as wind loads, current loads, and wave loads, while also important factors to consider in offshore operations, are not specifically listed on the Cantilever Beam Load Chart for the COASTAL DRILLER, which is the focus of the question.