When it must be redone
After any conversion or modification that changes lightship weight or centre of gravity beyond the flag’s tolerance — typically confirmed by a new inclining experiment — and when the vessel’s service or notation changes.
Glossary
Stability booklet (trim and stability booklet)
A stability booklet is the class- and flag-approved document that gives a vessel’s master the lightship data, hydrostatics, tank capacities and worked loading conditions needed to keep the ship within the intact and, where required, damage stability criteria of the IMO Intact Stability Code, SOLAS and the applicable class rules.
Services we deliver here
Class Approval Drawings & Statutory DocumentationClass approval drawings, calculations and statutory documents for newbuilds, conversions and modifications, prepared to the rules of ABS, DNV, LR, BV, IRS, NK, KR, BKI, RINA and CCS and taken through plan approval on the owner’s or yard’s behalf. Founder experience as an IRS surveyor means the package is written the way the reviewer reads it.OSV & Vessel Conversion EngineeringConversion engineering for offshore support and work vessels: OSV to well-stimulation vessel, barge to pipe-lay barge, tanker to FSO/FPSO and LNG carrier to FSRU. We deliver the feasibility study, the structural, stability and systems engineering and the class approval package, as on a 200-tonne-steel OSV-to-WSV conversion completed in Norway in 2024.
Further reading