🏗️ Ship Deck Crane: Luffing Boom, Hydraulic Ram Force, Load Moment and Heave (2D)

Side view of a telescoping deck crane on a heaving ship, with a hydraulic ram that raises the boom. Change the boom angle, the extension, the load, the ram attachment and bore, the relief valve setting and the sea state, and see the ram moment arm, the cylinder force, the oil pressure over a heave cycle and the safe load chart. The ram geometry, the static equilibrium, virtual work and the heave load factor are checked numerically, with four in-page numerical checks.