H & G Marine Service Inc.

H & G Marine Service Inc., a small business manufacturer based in Perryville, Missouri, supplies foam-filled unlighted steel river buoys and related navigational aids to the U.S. Coast Guard as a prime contractor under total small business set-aside delivery orders and indefinite delivery contracts, competing predominantly in the small business set-aside category.

The company operates as a 100 percent prime contractor with no subcontracted work, manufacturing all products in-house at its Perryville facility to U.S. Coast Guard Specification 455 and related standards. H & G Marine's concrete capability portfolio centers on fabrication and delivery of foam-filled unlighted steel river buoys in multiple classifications—including 4th class, 6th class, and western river buoys—along with river sinkers and related navigational infrastructure equipment used to mark channels, hazards, and boundaries on inland and coastal waterways. Representative recent prime awards include a $957,403.68 delivery order for delivery to Coast Guard Western River buoy tenders (September 28, 2026), a $1,014,368.21 order for steel buoys to multiple Coast Guard locations (July 8, 2026), and a $1,942,727.89 order for river buoys (June 12, 2024).

Customer concentration is extreme and singular: the Department of Homeland Security U.S. Coast Guard accounts for 291 of 310 prime awards (94% of award count) and $189.7 million of the $238.4 million combined potential value (80% by dollars). The remaining six customer agencies—the Army Corps of Engineers and its component engineering districts (Nashville, Huntington, St. Paul, Louisville)—place sporadic small orders valued collectively at under $300 thousand. The Coast Guard's dominance across both award count and dollar volume reflects H & G Marine's role as the incumbent sole-source supplier on the primary indefinite delivery contract vehicle.

H & G Marine holds a single-award indefinite delivery contract with the Coast Guard (IDC 70Z08422DWOPL0003) valued at $35.96 million, total small business set-aside, awarded September 16, 2022, extending through September 15, 2027, under NAICS 332313 (Plate Work Manufacturing). This contract is the parent vehicle for 110 delivery orders carrying $28.7 million in combined potential value. The company also operates under several other Coast Guard IDCs: HSCG2307DECB003 (36 task orders, $25.5 million), HSCG8413DBHQ003 (43 task orders, $17.3 million), and 70Z08418DBHQ00300 (29 task orders, $17.2 million). Individual delivery orders under these vehicles are issued as firm fixed-price or fixed-price-with-economic-price-adjustment, with completion dates typically two to four months from award, and mixed set-aside designations—some reserved as total small business set-aside, others issued full-and-open.

Activity trajectory shows marked growth from 2022 onward: 8 awards in 2022, 11 in 2023, 16 in 2024, and 71 in 2025, with 8 awards recorded through September 2026. The recompete cliff is minimal: only 4 awards with ultimate completion dates in the next twenty-four months carry combined potential value of $3.5 million. This low recompete exposure reflects the company's position as the incumbent holder of the primary Coast Guard indefinite delivery contract through September 2027, with high order frequency but short individual task-order completion windows that push most renewal activity beyond the twenty-four-month window.

The company's federal footprint is concentrated by geography and product: the top five parent vehicles account for all major activity, buoys represent 298 of 310 award line items in the source data (by PSC code), and plate work manufacturing accounts for 252 awards. H & G Marine has maintained SAM.gov registration since 2002 and has established itself over more than two decades as the strategic supplier for Coast Guard inland waterway navigational infrastructure, with prior delivery orders ranging from under $30 thousand to $3.7 million.

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.