Originally Posted by phil gollin View Post
The RN sent a nuclear sub - no updates as to where she might be.
Lets get it clear, once and for all time. Submarines of whatever color have never been designed for doing what is required in these circumstances.
The French sent L'Emerauld (a nuclear sub) to aid in the initial search for AF447. The first problem that had to be addressed was that their sonar detection was not aligned to the ULB frequency of 37.5kHz. That with some software updates and testing on another Rubic class sub was achieved. Probably too late in the calendar of events.
So, other than making use of their sonar, providing it can address the task, subs are of no particular benefit when comes to searching for aircraft that have become seacraft or any such like UFOs.