All of this talk of sonobuoys kind of assumes that:
1. ASW is the primary (or at least a major) role
2. Passive acoustic detection is still the best way to find submarines.
This century for sure, passive detection ranges reached the point where a long range, long endurance, MPA could barely carry enough buoys to track a target until it was time to RTB.
Re accuracy, GPS-fit sonobuoys tell you where they are, but if the wind on the way down skewed their delivery then you'll only know that they are in the wrong place.
A few posters on here seem overly focused on galleys, toilets, rest bunks etc.
You must remember though, that whilst crew comfort is essential to minimise fatigue, the primary task of a military MPA is killing people, so I'd prioritise sensors and weapons over convenience features.
Last edited by camelspyyder; 8th February 2017 at 18:38.