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ABS’ liftboat guide in US waters again, barring some notwithstanding, there is very remote possibilities.

still a signifcant degree of

New designs confusion and incongruity

Vessels between ABS and USCG Suda recently completed the design rules. This leads to an un- of a 320-ft-leg vessel (model SP 320- necessarily high margin of L3). There has been a liftboat with safety not evident in other longer legs, but the usable leg on the craft because the US Coast SP 320-L3 model and cranage make

Guard does not recognize it the “world’s largest liftboat.”

The co the ABS Guide. Instead, mpany is currently de- the USCG utilizes a com- signing a 450-ft-leg SEU (SUDA bination of ABS Mobile 450-L3T). Two of these vessels,

Offshore Drilling Unit the largest of their kind, are under (MODU) rules and its own construction by EMAS in Singapore.

Offshore Support Vessel These vessels have a large deck area (OSV) supplemental rules and can carry up to 250 passengers. (most recently updated Jan- They are suitable for operation in the

Scheduled for delivery in 3Q 2013, SUDA 300-L3 uary 2013). This sometimes North Sea and will carry Wind Farm features the shortest towers of any vessel in its results in more stringent Installation Maintenance and Repair class and can serve as an accommodation vessel. requirements than those for Certifcation.

(Image: A.K. Suda, Inc.) full-fedged MODUs. This liftboat (called so because

Liftboats are typically limited to These limitations sometimes result it is self-propelled) is also a new locations within 12 hours travel to in owners changing the fag of ves- generation jackup. It incorporates an area of safe refuge, unlike MO- sels operating outside US waters. a new-generation jacking system

DUs that should need, if anything, a This is not an easy decision. A lift- design concept. The compact, high- higher margin of safety. boat that changes fag can never work capacity accommodation meets what

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