Lightship mooring plans are based on thorough analysis of vessel deck gear and pier bollards and cleats. Lightship performs
all analysis in general accordance with NAVSEA Design Data Sheet, DDS 582-1, "Calculations for Mooring Systems".
A minimum safety factor of 3.0 times the maximum calculated stress is generally maintained for all mooring lines subject
to tension forces, based on the minimum breaking strength of the lines.
To ensure plan accuracy, Lightship performs pier studies to determine the general condition of the berthing facility,
current rated capacity of fittings, and original design capacity. We utilize industry standards to properly reduce the
rating of all bollards. Mooring lines are positioned to minimize the degree of mooring line angles, reduce the overloading
of pier bollards, reduce overloading of mooring lines and ensure
safety factors are met.
Lightship Supports The Maritime Administration
When the Maritime Administration had to deactivate some supertankers at a remote pier in New England and ensure
they would withstand most hurricane conditions, they turned to Lightship to develop their mooring and heavy weather plans.
When the Maritime Administration had to secure one of their cargo vessels to a pier in an active channel for long term
lay-up, once again they chose the owners of Lightship to develop the mooring and heavy weather plans.
Lightship Supports Texaco
When Texaco needed a condition survey of a wooden pier that had been damaged in a collision, they turned to Lightship
to provide a thorough survey of the pier, complete with samples of pilings and whales!