Cassette assembly, waterborne vessel and method of servicing a water-accessible structure

A method of servicing a water-accessible structure using a waterborne vessel, the waterborne vessel comprising a cassette assembly arranged at an end portion of the waterborne vessel, the method comprising:

• bringing a cassette section of the cassette assembly into contact with the water accessible structure, and
• countering relative movement of the cassette section in a direction towards an opposite end of the vessel using a resilient buffer system,
• wherein the resilient buffer system comprises a buffer comprising a plurality of resiliently compressible elements arranged in series,
• wherein the resilient buffer system comprises a vertical guide to prevent vertical movement of the buffer,
• wherein the vertical guide comprises a guide projection formed on one of the buffer or a guide channel of the cassette section, configured to cooperate with a slot formed on the other of the buffer or the guide channel.

A cassette assembly attachable to an end portion of a waterborne vessel, the cassette assembly comprising:

• a cassette section to bear against an external structure in use, the cassette section movable relative to the vessel in a direction towards an opposite end of the vessel;
• and
• a resilient buffer system to counter movement of the cassette section when the vessel is moved towards the external structure,
• wherein the resilient buffer system comprises a buffer comprising a plurality of resiliently compressible elements arranged in series,
• wherein the resilient buffer system comprises a transverse guide to limit a range of transverse movement of the buffer,
• wherein the transverse guide comprises first contact elements formed on transverse edges of the buffer, the first contact elements configured to contact second contact elements formed on transverse edges of a guide channel of the cassette section.