Baseline Lock Sheet | TriSeadon Fleet Program

Canonical Lock (Current Decision Cycle)

This sheet is the canonical baseline for this site revision. Hull dimensions, displacement, aviation capacity, physical module positions, Cerberus positions, SCUTUM positions, crew bands, and berthing limits may not change without explicit owner authorization and a dated baseline revision.

IMM, IWM, ISO, Cerberus, and SCUTUM payload selections may change by mission or certified refit. Their physical position counts may not change without the same authorization.

Revision date: August 10, 2026

Deck-Zone and LCB Orientation Lock

Each class's fore-to-aft zones total its locked overall length. A standard LCB is 60 ft x 25 ft; longitudinal bays place the 60-ft axis fore-to-aft, while crosswise bays rotate the 60-ft axis port-to-starboard.

Class	Locked Fore-to-Aft Zones	Permanent LCB Arrangement
FFG-64	110 ft forecastle + 70 ft forward superstructure + 80 ft missile deck + 70 ft aft superstructure + 100 ft flight deck + 70 ft aft gun deck = 500 ft	3 longitudinal centerline positions: forecastle, midships, and stern slide-in
DDG-152	150 ft forecastle + 85 ft forward superstructure + 80 ft missile deck + 85 ft aft superstructure + 125 ft flight deck + 125 ft aft gun deck = 650 ft	1 longitudinal forecastle position; 2 crosswise midships positions arranged fore and aft; 2 longitudinal stern slide-ins arranged port and starboard
CAG-3	220 ft forecastle + 100 ft forward superstructure + 80 ft missile deck + 100 ft aft superstructure + 150 ft flight deck + 150 ft aft gun deck = 800 ft	2 crosswise forecastle positions; 1 crosswise midships position; 2 crosswise aft-gun-deck positions; 3 longitudinal stern slide-ins

Locked Vertical Geometry

Class	Forward Superstructure	Aft Aviation Superstructure	Aviation Stack	ATC
FFG-64	50 ft including bridge	40 ft excluding ATC	25-ft clear hangar + one 15-ft air-ready/briefing level	Aft face flush with aft bulkhead; additional height
DDG-152	65 ft including bridge; one level above FFG	40 ft excluding ATC	25-ft clear hangar + one 15-ft air-ready/briefing level	Aft face flush with aft bulkhead; additional height
CAG-3	80 ft including bridge and flag bridge	60 ft excluding ATC	30-ft clear hangar + two 15-ft aviation-support levels	40 ft wide, centerline, and aft-aligned; additional height

Class Lock Table

Class	Role	Length x Beam x Draft	Displacement	Crew / Berthing	LCB	ISO	Cerberus	SCUTUM	Flight Deck	Hangars / Baseline Aircraft
FFG-64	ASW-forward escort and sea-lane control	500 ft x 66 ft x 17 ft	~10,000 tons	220-260 / 280	3	3	3	6	100' x 60'	2 / 2 MH-60; shared UAV support spaces
DDG-152	Air/missile defense backbone and strike support	650 ft x 88 ft x 24 ft	~15,000 tons	320-350 / 380	5	5	5	10	125' x 80'	3 / 2 MH-60 plus UAV bay
CAG-3	Guided missile heavy cruiser command flagship	800 ft x 108 ft x 30 ft	~32,000 tons	450-500 / 580	8	8	8	16	150' x 100'	5 / shared Viper and Venom bays plus 3 MH-60 bays

Change-Control Rule

Locked quantities: length, beam, draft, displacement, deck-zone lengths, forward- and aft-superstructure heights, flight-deck dimensions, enclosed-hangar count, baseline embarked-aircraft count, LCB count, ISO count, Cerberus count, SCUTUM count, normal crew band, and maximum berthing.
Configurable contents: certified IMM, IWM, ISO, Cerberus, SCUTUM, aviation, sensor, weapon, and mission-package selections may change without changing the locked number of physical positions.
Required authorization: a locked quantity changes only after explicit owner approval, revision of content/class-lock.json, a dated update to this page, and a successful class-lock audit.
CAG beam lock: the CAG beam is 108 ft. The 150 ft x 100 ft flight deck does not redefine the ship's maximum beam.
Fleet-wide aft hangar-face lock: on the FFG, DDG, and CAG, the aft face of the rear superstructure remains vertical and planar through the complete width and height of every hangar-door opening and operating envelope. Door travel, aircraft movement, apron clearance, and the flight-deck approach remain unobstructed. Low-observable faceting may resume above the door headers and around the outboard structure only after clearing those envelopes.
Fleet-wide ATC alignment: the reduced-footprint ATC sits above the aft aviation superstructure with its aft face flush to the parent block's aft bulkhead. Walkaround clearance remains forward, port, and starboard.
Aft Aegis-family lock: all three classes use the same scaled aviation-superstructure language: faceted sidewalls, flush fleet-standard radar-array faces, a protected flat hangar-door envelope, and aft-aligned ATC.
Production-award freeze: once a hull, module, or system production award is issued against an accepted baseline, no new capability, preference, or stakeholder-directed redesign enters that unit. Improvements move to the next hull, lot, flight, or scheduled 60-month refit.
Corrective-action boundary: only verified defect correction, safety-of-ship, cybersecurity, physical or information security, legal or regulatory compliance, or unavailable-part form-fit-function substitution may be approved for current production, and none may be used to add capability.

LCB Placement Lock

FFG: 1 longitudinal centerline forecastle LCB, 1 longitudinal centerline midships LCB, and 1 longitudinal centerline stern slide-in LCB.
DDG: 1 longitudinal centerline forecastle LCB, 2 crosswise midships LCBs arranged fore and aft on the centerline, and 2 longitudinal stern slide-in LCBs arranged port and starboard.
CAG: 2 crosswise forecastle LCBs arranged fore and aft, 1 crosswise midships LCB, 2 crosswise aft-gun-deck LCBs arranged fore and aft, and 3 longitudinal stern slide-in LCBs arranged port, center, and starboard.

Permanent-structure rule: these positions, foundations, boundaries, access routes, and service trunks are installed during construction and cannot be removed, exchanged, or relocated after construction. Any later IWM/IMM replacement is a certified major-refit alteration inside an existing LCB.

Stern slide-in orientation rule: every stern slide-in LCB is 60 ft fore-to-aft x 25 ft port-to-starboard x 15 ft high, positioned at the waterline with its opening aft. Crosswise deck LCBs are separate positions rotated 90 degrees so their 60-ft axis runs port-to-starboard.

Open the class placement renderings and empty-bay construction view.

DDG weight-discipline rule: the 15,000-ton DDG baseline is preserved by selecting appropriate IWMs and IMMs at build rather than loading every possible future option into the first-flight ship. Heavy growth items remain available through later block and refit pathways.

Production Sequence Lock

1: FFG first (restore missing frigate/ASW capacity).
2: CAG second (replace decommissioning cruiser command/strike role).
3: DDG third (phase replacement with existing DDG service life).

Key Technology Lock

Trinion: 10-inch family baseline. Trinion-H and Trinion-L are 10-inch systems.
Layered defense: long-range missiles, Trinion mid-layer, short-range missiles, CIWS/Cerberus terminal layer.
Modularity: LCB/IWM/IMM plus ISO rapid-swap doctrine is baseline.
APM-IWM: one module uses a 60 ft x 25 ft footprint, rises 25 ft above the weapon deck, extends 15-20 ft below it, and carries 4 x 87-inch tubes with 3 CPS rounds per tube (12 rounds total). Loaded-weight reservation is 600 short tons pending Navy certification.
Production-award freeze: no stakeholder or capability change after award. Improvements move to the next hull, lot, flight, or scheduled refit; only verified defect, safety, cybersecurity, physical or information security, legal or regulatory compliance, or unavailable-part form-fit-function action may enter the awarded baseline through configuration authority.

Fleet Baseline Class Technical Profiles Refit Doctrine