Ok, interesting. What were the French subs of the time like and did Indonesia have any? I think they might have had some ones from Russia at some stage bu not sure?![]()
Ground forces could be interesting and the French route to get there might require them to go via South America (rather than sail through Indonesian waters to reach their islands)
The French were late in the day fielding nuclear attack subs - mid-1980s - because they developed theirs from scratch and priority was given to a fleet of nuclear missile boats (which entered service in the 1970s).
So, assuming a date of 1985, they may have had one or two in service and in condition to fight.
However, the Rubis Class are not the best SSNs out there, by far. Many drawbacks to them - but faster, better armed and with better crews than the Indonesians' subs.
The French had a lot of diesel-electric boats, most of which were very good and with very well-trained crews, but they are far slower; especially when transiting to the Pacific: take about the same time to get there as a large yacht!
The Indonesians had 2 modern German subs (don't know if they still had the old Whiskey subs, but I wouldn't have liked to be on one of those if fighting the French Navy: very noisy.)