[Central Scrutiniser]

P3 Orion was built for low level sub hunting over the ocean.

The 757 could never do that.

[Paleo Conservative]

The 757 could never do that.

So why is the 737 suitable, but the 757 isn't?

[RunningWolf]

Well I think the 757 would have done it as well as any 737-200,300 based platform.

Although now that I see the 737 idea again, it looks a lot better than when it was based on the earlier 737's.