H & G Marine Service Inc.

H & G Marine Service Inc., a small business manufacturer of foam-filled unlighted steel river buoys and related navigational aids, operates exclusively as a prime contractor supplying the U.S. Coast Guard and Army Corps of Engineers with navigational infrastructure equipment under total small business set-asides and full-and-open competitions. The company is based in Perryville, Missouri, operates under NAICS 332313 (Plate Work Manufacturing), and has maintained federal vendor registration since at least the early 2000s, with its award footprint spanning four decades.

H & G Marine's customer base concentrates heavily with the Department of Homeland Security's U.S. Coast Guard, which accounts for 288 of 307 documented awards (90% of award count) and $187.3 million of the combined potential value across the portfolio. The Army Corps of Engineers and its subordinate engineering districts (Huntington, Nashville, Louisville, St. Paul, and others) represent the secondary customer base, though at substantially smaller scale: six awards valued at approximately $29 thousand combined to the parent Corps of Engineers office, plus five additional awards totaling $36 thousand to the Nashville district and four to the Huntington district totaling $141 thousand. This concentration is asymmetric—the Coast Guard dominates both award count and dollar value (79% of combined potential value), while the Army Corps of Engineers represents marginal volume. H & G Marine's distinct customer count is seven agencies, but operational reality is Coast Guard-dependent.

The vendor holds multiple single-award indefinite delivery contracts with the Coast Guard, the largest being IDC 70Z08422DWOPL0003 (107 task orders, $26.9 million combined potential value), awarded September 16, 2022, with a $35.4 million ceiling extending through September 15, 2027. This vehicle anchors the business model: the Coast Guard issues discrete firm fixed-price delivery orders for quantities of 30 to 1,000 buoys destined to specific locations (vessels, waterway management sites, scrap removal operations) nationwide, with economic price adjustment for steel and diesel costs. Representative delivery orders range from $30,000 to $3.7 million; recent orders (2025–2026) cluster in the $88,000–$1 million range. Additional Coast Guard IDCs include HSCG8413DBHQ003 (43 task orders, $17.3 million), HSCG2307DECB003 (36 task orders, $25.5 million), HSCG8416DBB8104 (31 task orders, $1.3 million), and 70Z08418DBHQ00300 (29 task orders, $17.2 million). The Army Corps of Engineers maintains separate buoy procurement vehicles; H & G Marine holds positions on at least two, with smaller order volumes reflecting the Corps' more limited buoy consumption compared to the Coast Guard.

Activity has accelerated markedly in recent years: eight awards in 2022, eleven in 2023, sixteen in 2024, and seventy-one in 2025, reflecting the Coast Guard's shift toward frequent small-to-medium delivery orders rather than fewer large procurements. The 2026 tally stands at five awards as of mid-July. Combined potential value is $236 million across all awards in the source data, with $120 million obligated (51% realization rate). The recompete exposure over the next twenty-four months is modest: four awards with ultimate completion dates between now and July 2028 carry combined potential value of $2.4 million, indicating that major vehicles (particularly the primary $35.4 million IDC extending through September 2027) remain under contract performance.

H & G Marine operates as a 100% prime contractor (zero subcontracted work documented). Capability concentration is narrow by design: Plate Work Manufacturing dominates the NAICS distribution (249 awards), with secondary work in Concrete Block and Brick Manufacturing (32 awards) and miscellaneous minor categories. Product concentration is even tighter: 295 awards carry PSC code for buoys, with 27 for scaffolding and concrete forms, eleven for mechanical presses, and three for ship and marine equipment. The vendor manufactures in-house at its Perryville facility; all documented awards specify place of performance as Perryville, Missouri. The product line encompasses 4th class, 6th class, and western river buoys, foam-filled unlighted steel buoys, river sinkers, and related mooring aids, all to U.S. Coast Guard specification 455 and related technical standards.

The vendor's competitive posture is predominantly set-aside: the primary Coast Guard IDC is total small business set-aside, as are several Army Corps of Engineers awards (July 2022 purchase orders for 6th class river buoys). However, the majority of delivery orders issued under the small-business-set-aside IDC vehicles carry no additional set-aside designation, meaning they compete full-and-open among task orders. This reflects the Coast Guard's practice of reserving the underlying vehicle for small business, then issuing individual orders without further set-aside constraint.

H & G Marine Svc Inc manufactures river buoys and concrete sinkers for the US Coast Guard. For more information, please contact us at (573)547-8336.