They'll know when Georgia SSGN 829 or Florida (729) transits the Suez again (of course could take the long way, but that's not what she did last time.
The Ohio-class guided-missile submarine USS Georgia (SSGN 729) returned to its homeport of Naval Submarine Base Kings Bay, Georgia, Sep. 22, for the first time in 790 days.
www.dvidshub.net
The Gulf isn't that deep, big boats leave a small, but supposedly detectable wake when submerged. China has a centi.eter-level topo scanning satellite, so add it up and odds are she could be tracked with decent accuracy. Removing a subs primary defense: stealth.
The interaction between a moving submerged body and a homogeneous/stratified fluid generates a Bernoulli hump, a Kelvin wake, and an internal wake on the water surface. The height distribution of wakes is directly related to the location and motion state of the submerged body. Thus, it is...
ieeexplore.ieee.org
Authors:
Fuduo Xue
Beijing Institute of Technology
Weiqi Jin
Su Qiu
Beijing Institute of Technology
Jie Yang
Vid describing Chicom satellite (conclusion is incorrect - most Chicom satellites are dual purpose, public and military,
Gulf depth chart.