NavList:

First Thoughts.  It’s close to full moon, so the Sun and the Moon are almost opposite one another in the sky.  Therefore, the LOPs will be almost parallel.  Ignoring dip, the LOPs will overlap by twice the angle of dip.  Height of eye = (overlap/2x0.97) squared.

Reality check.  Google images shows the typical height of the first usable passenger deck above sea level is approximately 90% of the ships beam.  The largest cruise ships have a beam of about 156ft, so we’re looking at a height of eye of around 140ft.

I spent over an hour trying to do this using the US AA and AP3270, but proved I was in the rescue boat which had just been launched either because the tables weren’t accurate enough or I’d made a slight error somewhere.  Therefore, I resorted to ‘Navigator’ to save time.

Using 25° 30’N 076° 00’W IC -0.3’ Moon UL 22:00. Hs 09° 39’, Ho 10° 12.5’, Hc 09 40.7’, int 31.8T Az 069°

Sun LL Hs 10° 56.5 Ho 11° 07.5’ Hc 11 15.8, int 8.8A Overlap = 23.5’ Ht= (23.5/2x0.97)  x (23.5/2x0.97)  =147ft

I’m still working on longitude. DaveP