Diehl Engineering Inc, PS

Diehl Engineering Inc, PS, a small-business Subchapter S corporation based in Poulsbo, Washington, provides propulsion shaft alignment and bearing inspection services to naval and maritime operators as a prime contractor (87% of awards) on U.S. Navy and Coast Guard vessel maintenance programs. The vendor operates predominantly on firm fixed-price purchase orders with no set-aside designation, competing full-and-open across military maritime customer bases.

Diehl Engineering's capability portfolio centers narrowly on propulsion-system alignment verification and bearing reaction measurement for naval vessels, supply ships, and Coast Guard cutters. Recent representative work includes a $34,287 firm fixed-price purchase order from the U.S. Coast Guard (awarded September 2026) for shaft alignment work on USCG Stratton with performance in Alameda, California and completion by November 1, 2026; a $16,292 Military Sealift Command purchase order (October 2023) for shaft alignment and bearing inspections on USNS Apalachicola; and a $5,552 Army Corps of Engineers purchase order (March 2024) for main reduction gear alignment on the YAQUINA, designated as total small business. The vendor's work consistently involves strain gauge measurements, coupling and bulkhead seal inspections, and technical reporting on propulsion-system condition per NAVSEA Standard Items.

Customer concentration is extreme and sustained. The Department of the Navy's Military Sealift Command accounts for 68 awards (57% of the portfolio) worth $1.1 million in combined potential value. The U.S. Coast Guard represents 12 awards ($157 thousand), and Naval Sea Systems Command 13 awards ($30 thousand). Together, these three Navy-aligned customers account for 93 awards and 92% of combined potential value across the 120-award lifetime portfolio. The vendor has served six distinct federal agencies since 2001 but has remained functionally locked into Navy and Coast Guard maritime maintenance for the past five years.

Activity has been sparse and episodic. The vendor recorded two awards in 2020, three in 2023, six in 2024, seven in 2025, and three through September 2026 — no consistent growth trajectory. Combined potential value across all 120 awards sits at $1.4 million, offset by $2.6 million in obligated dollars (187% of potential), indicating that actual invoiced work has exceeded ceiling estimates. In its subcontractor role (13% of awards), Diehl Engineering performs shaft-alignment and bearing-reaction work under Vigor Marine LLC on Navy depot modernizations (USS Kidd, USNS Earl Warren, USNS Guadalupe, USNS Matthew Perry) and under BAE Systems Maritime Solutions San Diego on LCS-class ship maintenance (USS Kansas City, USS Oakland, USS Charleston, USS Essex, USS Mobile). Only one award is scheduled for completion within the next twenty-four months, reducing near-term recompete exposure.

Service Contract Inventory data shows minimal federal services-contract footprint: a single SCI record for FY2025 as a named subcontractor, representing 0.2 FTEs. SCI is a strict subset excluding goods and micro-purchases, so this figure does not represent the vendor's full federal activity — the 120 purchase orders in the award portfolio, mostly below the $150,000 reporting threshold, fall outside SCI scope. The vendor's NAICS split reflects the dual nature of the work: 57 awards under Engineering Services and 54 under Ship Building and Repairing. Top PSC categories are Non-Nuclear Ship Repair (West) with 45 awards and Maint/Repair/Rebuild Of Equipment–Ship and Marine Equipment with 27 awards, anchoring the vendor's identity as a specialized maritime-propulsion technician for homeport and depot-level Navy operations.