Container exchanges between vessels

In a system to transfer containers between vessels comprising:

• (a) a terminal having a floating crane selectively positioned along a straight course between established limits;
• (b) said floating crane, having a craneway disposed by towers above a catamaran type hull, accommodates the disposition of a trolley bearing a container for out-reaches to athwartship cells of vessels;
• (c) said hull, having a range of displacements, may provide varied buoyant support by the pontoon formed catamaran hull;
• (d) an arrangement of piling disposes a vessel to each side of hull;
• (e) said vessels have uniform cell accommodations with a selected cell of each vessel disposed beneath said craneway;
• (f) a hoist system, extending between said out-reaches, accommodates a selected elevation of a spreader frame held as a pendant with said disposition of the trolley;
• an improved arrangement to content with the spotting above and engagement together of said spreader frame and a container as two bodies being one, comprising:
• (1) spotting means suitably arranged around the spreader frame, as protruding angularly beneath and retractable appendages, negate the sway tending pendant like body with lowering by the hoist system to an initial contact between common corner match-fit fixtures and castings for said engagement;
• (2) locking means cocked to be set measurably after seating of said engagement depends upon the trigger release of a compression spring acting on a double acting toggle joint to force bolts home to lock said bodies together;
• (3) retracting means for said appendanges includes a rack and pinion train to multiply the force of a solenoid powering the appendages assembly;
• and,
• (4) cocking means for said bolt depends on a solenoid to activate the said toggle joint as arranged to be most powerful when needed to overcome inertia and friction resisting forces.