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Pages 48-54

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From page 48...
... 48 4. SMALL PASSENGER VESSEL LIGHTSHIP VERIFICATION Importance of Lightship Verification for U.S.
From page 49...
... 49 evidence that weight creep does occur, the amount of weight creep occurring on various types of passenger vessels and its impact on vessel stability are not known. Past Efforts to Require Periodic Lightship Verification for U.S.
From page 50...
... 50 Weight and Inspected Vessel Stability Requirements, was revised in 2007. In August 2008, the formal NPRM appeared in the Federal Register.13 This NPRM attempted to address two main areas: an increase in the average weight of passengers used in the stability calculations and a requirement for periodic lightship verification every 10 years.
From page 51...
... 51 major contributing factor to the accident were located.15 These accident reports covered vessels from the United States, the United Kingdom, and Canada. Other maritime administrations, both international and national, have implemented regulations requiring periodic lightship surveys of passenger vessel weight.16 The rationale and data used to implement the regulations could be a good source of information for USCG.
From page 52...
... 52 As part of its effort to obtain actionable data on lightship weight creep on passenger vessels, USCG could work with interested members of the U.S. domestic passenger fleet to study weight growth and assess the necessity of a lightship verification for small passenger vessels regulated under Subchapters H, K, and T.17 Potential data could include vessel identification, casualties, voluntary measurement of selected vessel lightship particulars over time, and historical and current weight surveys, as well as subsequent analysis of the collected data.
From page 53...
... 53 potentially more susceptible to stability concerns from lightship weight growth. Such a study could allow the USCG to focus their efforts if results were to show a particular vessel type or class with a potential sensitivity to lightship weight growth.
From page 54...
... 54 Potential Options for Lightship Verification Passenger vessels currently use four basic lightship verification options, which are explained in more detail in Appendix H

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