Ingenuity That Floats

Major Conversion - Lengthening of RO/RO Vessel

193,3m long of RO/RO vessel has been lengthened with a parallel insertion block of 30m net length. The conversion includes the lengthening newbuilding structure, the reinforcement regarding new dimensions, moments and draughts acc. to DnVGL Rules and Regulations, changes regarding rules e.g. MARPOL 12A, and PSPC.

Design & Practice

The concept design work for the conversion was performed by Owner’s design contractor and approved by DnVGL as the vessel’s classification society. The 3D modelling and detail design activities have been executed by Gemak Group’s own in-house design department including hull and pipe/outfitting disciplines.

Work Description

· Building of an insertion new block including hull and all piping/outfitting finalized with all coating activities.

· Cutting of the vessel at dry dock and moving of forward part by Gemak Group’s owned skidding system.

· Alignment of insertion block and forward part to aft part within ±5mm tolerance.

· New cofferdams were created in slop tanks.

· Outer shell and inside reinforcement due to longitudinal strength.

· Structural reinforcement against bottom slamming and bow impact.

· Collising bulkhead re-positioning.

· New structural ventilation ducts.

· Structural modification acc. to Marpol requirements (new double bottom and inner hull for the forward fuel oil tanks).

· Related modifications for all piping systems.

Main Particulars of the Vessel