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/ mooring / f.p.s.o. dalia mooring
DALIA MOORING ANALYSIS
In order to account for Inertia Effects, Windage
Loads, Stiffness of Lines and Fenders, a Non Linear Dynamic Mooring
Analysis was performed in order to quantify and optimise the line
tensions, fender reactions, longitudinal, and transverse displacements.
With her 300m length, 60m beam, and 30m depth, 20m
freeboard, her windage area, for a potential worse case beam on wind
of 71 knots, was 800 tonnes.
Clearly if no single line tension is allowed to exceed
in most cases, 80 tonnes, and some cases 150 tonnes, a balancing act
is required to ensire that the combination of line tensions, in a
dynamic (moving ship) is well balanced through the effects of length,
angle, and flexibility.
The dynamic, 6 degree of freedom, analysis, which
allows the vessel to float on hydrostatic pressure, and takes true
accout of all inertia effects, was perform on Finite Element Analysis
Software.
The analysis and evential mooring arrangement (which
in this case considered of 35 lines), peformed by Triton naval Architects,
was approved by London Offshore Consultants (LOC) in the UK.
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Triton Naval Architects
No. 8 Foregate Square,
Harbour Rd
Foreshore, Cape Town, SOUTH AFRICA
Tel: +27 21 418 2090 | Fax:
+27 21 425 2722 | Email: triton@triton.co.za
By Triton Naval Architects
Triton
Naval Architects
