Another aspect of efficiency is workability. Increasing the envelope means higher operation time. With a luffing of 30° up and down the system increases the envelope as heave and roll can act simultaneous and makes the system operational up to a significant wave height of in excess of 3m. The neutral reach of the system is adjustable from 15 to 21 meters and in every position still has a 7m compensation stroke (usually sway). The side to side deflection (usually surge) of more than 16m makes sure that precise positioning of the vessel is not required and lower DP accuracies are no problem.