Abstract: A lubricating oil composition comprising a major amount of an oil of lubricating viscosity, an alkaline earth metal borated sulfonate detergent, and, optionally, a molybdenum-containing compound, wherein the lubricating oil composition comprises no more than 0.12 wt % phosphorus and the amount of sulfated ash in the lubricating oil is not more than 1.25 wt %.

Abstract: The handling apparatus includes two spaced apart lower arms pivoting on a base, and two spaced apart upper arms pivoting on an elbow bearing on the lower arms. The lower arm is driven by a ball-screw arrangement in which a threaded drive, mounted on the base of the apparatus is connected to a ball screw attached to a strut between the ball screw and the lower arm. Moving the ball screw along the threaded drive member pivots the lower arm upward. Another ball screw arrangement is mounted on the lower arm and is attached to the lower end of the upper arm by means of cables that extend along a rear curved surface of the upper arm to allow for more travel of the upper arm. Various attachment can be mounted on the upper arm including hangers for propellers and rudders and a gripper unit for supporting propeller shafts. When handling propellers and rudders, a single material handling unit is used, and the propeller or rudder is hung between the spaced apart arms.

Abstract: An improved system for operating a lifting cable over the side of a ship at ea in which a spar buoy having an adjustable lifting capacity is coupled to the ship by a rigid linkage which is free to pivot on an axis attached to the ship deck, and operates to decouple the motion of the ship from the lifting cable. The spar buoy is attached to a gimbal sheave assembly having a disengageable connector and tension line for drawing the connector into engagement with a mating socket at the outward end of a linkage boom. A narrow upper section of the spar buoy is provided with a plurality of vertical tubes and valves which by flooding or evacuating operate to vary the effective water plane area of the buoy for continual fine tuning and optimally adjusting of its natural heave mode characteristic frequency.