
A – Operating Theory
DPN 402197 © TSS (International) Ltd Page 9 of 10
Figure A–10: Skew angle measurement
Because of this relationship, the System can determine
the angle of skew
θ
:
The skew measurement method described does not
require you to locate the coil triad directly over the target
cable. It can work to the specified accuracy over a consid-
erable swath range.
The convention used by the 350 System is to define posi-
tive skew with the ROV rotated clockwise relative to the
target.
The SDC displays measurements of skew only with the
System operating in the Survey mode.
θ
v
y
v
x
----atan=
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