Yep, polaroids were a mandatory safety item in PNG, especially as most of the charts stated "Uncharted waters, beware of reefs...etc" No GPS in those days either, well not of any use anyway (8hrs for a fix at @$10k from memory!!). Don't know if I'll trust my GPS for a night entry yet, I'll get to know it first.
Gotta go & play with the new toy!
cheers