We are starting to hear some stories about what was done during RIMPAC 2024. The Aviationist reports,
The U.S. Air Force B-2 Spirit carried out a QUICKSINK demonstration during the second SINKEX (Sinking Exercise) of RIMPAC 2024. This marks the very first time a B-2 Spirit has been publicly reported to test this anti-ship capability… During the drills, two long-planned live-fire sinking exercises (SINKEXs) led to the sinking of two decommissioned ships: USS Dubuque (LPD 8), sunk on July 11, 2024; and the USS Tarawa (LHA 1), sunk on July 19.
The video above is from 2022. Unlike the recent RIMPAC sinking, the weapon was delivered by an F-15 and the target was only a small ship.
We talked about QuickSink earlier and why preparing Coast Guard aircraft to use it on the first day of a war might be a good idea.
Perhaps the threat of an invasion of Taiwan may have influenced the choice of targets for the SINEXes.

Yuzhao (Type 071) Class Amphibious Ship With two Houbei (Type 022) fast attack craft behind. CSR Report RL33153 China Naval Modernization: Implications for U.S. Navy Capabilities—Background and Issues for Congress by Ronald O’Rourke dated February 28, 2014.

020628-N-3228G-001.Pearl Harbor, HI (Jun. 28, 2002) — Amphibious warfare ship USS Tarawa (LHA 1) leaves Pearl Harbor to participate in exercise “Rim of the Pacific” (RIMPAC) 2002. U.S. Navy photo by Photographer’s Mate 1st Class William R. Goodwin. (RELEASED)

Type 075 landing helicopter dock. By China News Service, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=149168539
I look forward to seeing the Videos. Would really like to know how many weapons of each type were used. These big ships can be very hard to sink.
QuickSink, a modified 2,000-pound GBU-31 JDAM that blows up under the keel, is the only non-nuclear weapon that may be more deadly to ships than a torpedo, and the B-2 can carry 16 of them. Employing the Rapid Dragon system, C-17s and C-130s could bring many more.
Below is video of the USS Denver SINKEX in 2022. She was a sister ship of USS Debuque.

Another “QuickSink” test. Ship-killing guided bomb put to test as Air Force sinks cargo vessel (airforcetimes.com)
Cheap Cruise Missile Paired With Affordable Seeker From Ship-Killing Smart Bomb Eyed By USAF
https://www.youtube.com/embed/Zq1UH677r9k?si=hMXKxOxnven0lWst
More info including a smaller version based on 500 pound bomb.
https://www.twz.com/air/smaller-version-of-quicksink-ship-killing-smart-bomb-tested-by-usaf
USAF’s Quicksink Ship-Killing Smart Bomb Seen In Detail Like Never Before
https://www.twz.com/air/usafs-quicksink-ship-killing-smart-bomb-seen-in-detail-like-never-before
These can also be dropped from cargo planes. https://news.usni.org/2025/09/10/b-2-stealth-bomber-sinks-target-in-anti-ship-weapon-test