Donjon Marine Co., LLC

Donjon Marine Co., LLC, doing business as Don JON Marine Co Inc., is a for-profit maritime services prime contractor headquartered in Hillside, New Jersey, that provides vessel salvage and recovery, maintenance dredging, emergency response operations, towing support, and specialized marine services to the Navy, Army Corps of Engineers, and Coast Guard on a full-and-open basis, with no set-aside designations across its federal prime footprint. The company operates its own fleet of mechanical clamshell dredges, bottom-dumping barges, tugboats, and survey vessels and has maintained federal contracting relationships since SAM registration in October 2001.

Donjon Marine's customer base is heavily concentrated in maritime and coastal infrastructure. The top five agencies account for 90% of recent awards, anchored by the Department of the Navy Naval Sea Systems Command (NAVSEA) at 129 awards totaling $739.1 million combined potential value and the Army Corps of Engineers Engineering District New York at 33 awards representing $755.5 million — together these two customers dominate the dollar value. Notably, while NAVSEA leads by award count, USACE's definitive contracts for large-scale maintenance dredging projects drive the highest individual ceilings. The Department of the Navy broadly accounts for 121 awards with $250 million, and the Coast Guard has placed 29 awards valued at $10.3 million. Across the entire portfolio, 363 prime awards totaling $1.83 billion in combined potential value have been recorded, with $1.3 billion obligated (71% of potential).

Donjon Marine's work is routed through several large Navy indefinite delivery contracts. The top parent vehicle is Indefinite Delivery Contract N0002418D4307, under which 60 task orders worth $180.5 million have been placed; Indefinite Delivery Contract N0002403D4204 carries 27 task orders valued at $313.4 million; and Indefinite Delivery Contract N0002411D4002 hosts 47 task orders worth $59.9 million. Smaller vehicles N0002490D4148 (36 task orders) and N0002498D4047 (21 task orders) also carry significant volume. This structure places Donjon Marine in a long-term delivery-order posture where new work flows through established Navy relationships rather than through open competition or government-wide vehicles.

Representative recent work spans large dredging definitive contracts and smaller task orders. USACE awarded Donjon Marine a $86.6 million firm-fixed-price contract in August 2025 for maintenance dredging of Newark Bay with 400,000 cubic yards of material removal; a $30.8 million September 2024 contract for the Arthur Kill 50-foot channel with 150,000 cubic yards; and a $9.7 million October 2025 Bronx River contract involving 200,000 cubic yards. NAVSEA issued a $46.9 million cost-plus-award-fee delivery order in March 2024 for Baltimore Bridge recovery operations, a $16.9 million May 2024 delivery order for the Key Bridge Display project, and a $4.9 million March 2025 delivery order for CVN-65 ex-Enterprise towing. Smaller Naval support task orders include a $777 thousand August 2025 delivery order for Exercise UNITAS 25 tow support, a $3.4 million June 2024 delivery order for Naval Sea Systems Group 8 operations management, and a $1.6 million May 2024 delivery order for recovery operation support.

Activity has remained steady over the past five years — 12 awards in 2022, 13 in 2023, and 14 in 2024 — though 2025 and 2026 show a sharp decline to 6 and 3 awards respectively, reflecting a seasonal or project-cycle pattern rather than a sustained trend. Eight awards with combined potential value of $23.2 million face ultimate completion within the next twenty-four months, creating a modest recompete cliff. The portfolio exhibits minimal sub-award activity; only one sub-award appears in the source data — a July 2024 Shippingport ARDM-4 gantry cranes overhaul sub to Delphinus Engineering, Inc. — indicating Donjon Marine executes its federal work primarily as a prime contractor using organic fleet capacity.

NAICS concentration is heavily weighted toward water transportation support and dredging: the top category is Other Support Activities for Water Transportation (139 awards), followed by Other Heavy and Civil Engineering Construction (40 awards), Remediation Services (19 awards), and Navigational Services to Shipping (13 awards). PSC codes align tightly: Salvage-Other (124 awards) and Salvage-Marine Vessels (116 awards) dominate, with Environmental Systems Protection Oil Spill Response (16 awards) and Construction of Dredging (11 awards) rounding out the core. The portfolio also reflects a subsidiary structure; Donjon-Smit, LLC (For Profit Organization, Limited Liability Company) is named as a subsidiary, though the source does not describe its specific role or capability scope.