Short answer: the ideal triangulation position for the 4. bearing is when you set a course perpendicular to the expected(!) LINE of position after the 3. bearing.
However the real problems are the round up "errors" of the
- hydrophone guy (
http://www.subsim.com/radioroom/show...6&postcount=13)
- the SH5 ruler (round-errors of 50m -> 1000m at different zoom-levels)
and
- the SH5-circle (not able to show and draw tens of one degree).
another link:
http://www.subsim.com/radioroom/show...light=bearings