What does Timothy think of this ?

[Timothy]

A diesel boat could also shadow another surface ship closely enough to completely blank out it's sound signature.  A surface vessels sound signature is all fuzzy and distorted.  A submerged sub in deeper water is "clean" for lack of a better term.  They just light up the diesels and snorkel along at 60 ft or so...  At night they can run full ahead and they look just like any other pig boat!  (surface ship = pig boat)

It's not easy but it's plausible.  Again, as Tom mentions, fuel is the problem.

[jnevis]

Magnetometer is one of the sensors used for airborne sub hunting.
Satellites are capable of photographing submerged boats at 300 ft or more.

P-8A no longer has a MAD boom, and can't go as low and slow as a P-3.  Airborne MAD detection really wasn't all that effective, bouys found and tracked most boats once other systems directed the planes to a search grid. 

The Paki boat my crew found was Mark 1 Eyeball.  It was making a training run on a merchant we were rigging and went "Hey what's that?"  We took a few pictures and passed the location to the slick S-3B for them to follow.  Within 10 minutes of them going on station they lost it.  Now the carriers no longer have a fixed wing airborne ASW platform.  Big Navy has all but forgotten how to track subs in open water, we're to focused on IEDs and fighting in caves.

[Timothy]

Big Navy has all but forgotten how to track subs in open water, we're to focused on IEDs and fighting in caves.

I know about 1000 ex-SOSUS guys and gals that will happily volunteer to man the stations...most are now retired and living on a government check anyway!  Most, if not all of the old stations are now gone but all the stuff is still there.

[tombogan03884]

P-8A no longer has a MAD boom, and can't go as low and slow as a P-3.  Airborne MAD detection really wasn't all that effective, bouys found and tracked most boats once other systems directed the planes to a search grid. 

The Paki boat my crew found was Mark 1 Eyeball.  It was making a training run on a merchant we were rigging and went "Hey what's that?"  We took a few pictures and passed the location to the slick S-3B for them to follow.  Within 10 minutes of them going on station they lost it.  Now the carriers no longer have a fixed wing airborne ASW platform.  Big Navy has all but forgotten how to track subs in open water, we're to focused on IEDs and fighting in caves.

Typical, the "management" always put to much emphasis on the last war instead of thinking ahead toward what they will do when the Iranians sink a carrier.