Submersible Stern Y-Door (Yacht Carrier / Special Vessel)
SMS-SME Submersible Stern Y-Door (Yacht Carrier / Special Vessel) — Semi-submersible yacht carrier (Y-type vessel, e.g. Spliethoff YACHT SERVANT) — world's largest stern door; full-height submersible door for yacht sail-in; provides fully enclosed hold.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Structural integrity of ramp hinge pins, trunnions, and knuckle joints — inspect for wear, corrosion, and fatigue cracks
Hydraulic cylinders and piping: check for leaks, rod scoring, seal condition, and correct operating pressures
Watertight seal / rubber gasket condition along ramp perimeter — inspect for compression set, cracking, and proper seating against the hull
Cleats, locking devices, and securing hooks: verify engagement, latch function, and absence of deformation
PLC control system and limit switches: test full open/close sequential operation, Bridge indication lights, and emergency manual override
Auto-rail system (handrail) deployment mechanism: lubrication, pin alignment, and correct stowage
Ramp surface anti-skid plating, chequered or grating panels: check for deformation, corrosion, and weld integrity
Wire ropes or jigger winch (where fitted): inspect for broken wires, correct fleet angle, drum condition, and brake holding capacity
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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