No explosions were detected. However, I remember a story in the 1980's where a Soviet sub DETACHED a 'tail' from a British sub.
According to my search of the Internet, S.O.S.U.S. is de-classified...
The Truth About Tonkin:
Questions about the Gulf of Tonkin incidents have persisted for more than 50 years. But once-classified documents and tapes released in the past several years, combined with previously uncovered facts, make clear that high government officials distorted facts and deceived the American public about events that led to full U.S. involvement in the Vietnam War.
On 2 August 1964, North Vietnamese patrol torpedo boats attacked the USS Maddox (DD-731) while the destroyer was in international waters in the Gulf of Tonkin. There is no doubting that fact.
But what happened in the Gulf during the late hours of 4 August—and the consequential actions taken by U.S. officials in Washington—has been seemingly cloaked in confusion and mystery ever since that night.
https://www.usni.org/magazines/navalhistory/2008-02/truth-about-tonkin
[Persian] Gulf News -Saudi Arabia oil stations attacked by drones
SOSUS was basically declassified way back in the ‘70’s The Hunt for Red October.
“. . . on their way to the US after being loaded with Saudi oil.”
I thought we were “Energy Independent?”
Why are we still buying Saudi oil?