Mooring Loads Due to Parallel Passing Ships - State Lands ...

Dimensionless Load
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
X x / / L
Figure 12. idealized variation of loads with overtaking distance, X/L, based on theory of
Wang (1975) as adopted in PASS-MOOR by Seelig et al. (2002).
Repeatability in Tests
Dimensionless plots similar to Figure 10 have been obtained for all data. In
some cases, multiple tests were made using the same input condition, i.e. same depth,
vessel draft, spacing, and (to within the accuracy possible with the speed control) the
same vessel speed. Figure 13 shows an example of the degree of repeatability
obtained from five tests of the same condition.
NFESC TR-6056-OCN
16
Fx
Fy
M