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Field Activity:  DYNAMIC (AFDL 6)
MARMC has a subordinate command (Auxiliary Floating Dry Dock DYNAMIC (AFDL 6)) that provides dry-docking services for PC, LCU, MCM, MHC, yard tug, Army LCM, and other small vessels ISO Homeland Security and Amphibious Readiness.
Lieutenant Commander Johnny Lee Stevenson JR​​, USN
Dynamic (AFDL 6) Commanding Officer, Mid-Atlantic Regional Maintenance Center DET
Lieutenant Gaston Hatfield

LCDR Stevenson was born in Bradenton, Florida.  He is the only child of his parents, Johnny Sr. and Evelyn Stevenson.  In January 1996, he enlisted in the Navy under the delayed entry program as an undesignated Fireman recruit.  He graduated from Recruit Training Command and Apprenticeship Training in Great Lakes, IL.

His enlisted duty assignments include USS Gonzalez (DDG 66), USS Barry (DDG 52), Shore Intermediate Maintenance Activity (SIMA) Norfolk, Virginia, and Navy Personnel Command enlisted electrical rating Detailer Millington, Tennessee.  Shortly after advancing to Chief Petty Officer in 2006, he was selected to the Limited Duty Officer Program under the Engineering Repair (6130) designator in 2010.

His commissioned assignments include Main Propulsion Assistant aboard USS Gonzalez (DDG 66); Main Propulsion Assistant USS Kearsarge (LHD 3); Engineering Assessor and Project Officer at Engineering Assessment Atlantic (EAA); Chief Engineer aboard USS Gunston Hall (LSD 44).  Ashore, he served as Assignment Officer for Surface Engineering Limited Duty and Chief Warrant Officers (PERS 414C) at Navy Personnel Command in Millington, Tennessee. Most recently, the 36th Commanding Officer of Navy’s floating dry dock DYNAMIC (AFDL 6).

His personal awards include the Navy and Marine Corps Commendation Medal (seven awards), the Navy and Marine Corps Achievement Medal (four awards) and various unit and campaign awards. LCDR Stevenson holds a Master’s and Bachelor’s degree in Management Studies from Excelsior University and an Associate’s Degree in Middle Management from Southwest Community College of Tennessee. 

Lt. Cmdr. assumed command of DYNAMIC (AFDL 6) in September 2023.​​​

DYNAMIC (AFDL-6) was built by the Chicago Bridge and Iron Company, Eureka, California.

  • Keel Laid: 03 Sep 1943
  • Launched: 22 Feb 1944
  • Completed: 11 Mar 1944

Upon commissioning, DYNAMIC was assigned to Commander Destroyer Squadron EIGHT as USS AFDL-6 in San Diego, CA. In April 1962, DYNAMIC was deactivated, and in August 1962, reactivated for transfer to Little Creek, VA. On 5 September 1962, DYNAMIC was towed by USS CHICSAW (ATF-83) to the Panama Canal for further transfer to Little Creek by USS SHAKOR (ATF-162) on 23 September 1962. DYNAMIC arrived at Little Creek on 01 October 1962, and presently operates under Naval Surface Force Atlantic, Readiness Support Group, Norfolk, Virginia.

The dock was intended primarily for advanced base operations in areas which may be remotely separated from any permanently established shore-based installation.

In part it is self-sufficient in that it carries its own source of power, supplies and provisions as well as providing for ship repair services. Personnel, repair barges and other floating equipment are often permanently assigned to the dock and becomes an integral part of it as an operating unit.

DYNAMIC is suitable for docking vessels of the mine countermeasure (MCM) and (MHC), patrol craft (PC), yard tug (YTB) and other vessels of a similar size. Obviously, smaller vessels can be docked in this dock, sometimes in multiple docking arrangements.

Presently DYNAMIC operates as a shore dependent dock, providing regular and emergency docking availability, and sandblasting services for Commander, Naval Surface Force Atlantic operating units and various support craft.