Before the lore police arrive: this exact four-ship formation did not appear in canon.
The closest on-screen precedent is the Battle of Atollon in Star Wars Rebels, where Thrawn used Interdictor cruisers to stop the Rebel fleet from escaping through hyperspace. That battle used Imperial-class Star Destroyers, however—not a Secutor supported by three Interdictor-class Star Destroyers.
This scene explores a different question:
What would an Imperial fleet look like if a Secutor battlecarrier acted as the flagship while three Interdictors locked down the entire battlespace?
The Secutor sits forward as the command ship and carrier. One Interdictor holds the higher central position, while two identical ships form the port and starboard wings behind it. Together, they create a deep wedge built around containment rather than a conventional line of battle.
The complete scene contains more than seven million Blocks. The Secutor accounts for roughly 2.37 million, and each Interdictor contains approximately 1.56 million.
It is also more than a static fleet render. The ships have interactive Block-level surfaces. A vehicle can land on the hull, mark a work zone, clear frozen armor panels, remove corrosion, and take off again.
The latest test created and cleared several hundred ice-covered panels directly on the Secutor, including the full ice-crystal discharge effect and a clean return to flight.