20--PURCHASE BLOCK REPLACEMENT - RUNNING RIGGING BLOCK

The National Park Service at San Francisco Maritime National Historical Park is seeking a small‑business contractor to fabricate and deliver approximately 234 custom running‑rigging blocks for the historic sailing vessel *Balclutha*. The work includes design, sample/mock‑up approval, production of wooden‑shell blocks (elm or ash) with galvanized metal hardware, and delivery to the park in Vallejo, CA. The contract is a firm‑fixed‑price, 100 % total small‑business set‑aside, with a one‑year performance period (28 Sep 2026 – 27 Sep 2027) and a final delivery deadline of 31 Aug 2026. Bidders must be registered in SAM and meet the NAICS size‑standard (≤ 750 employees). • Replace 234 historic rigging blocks (various sizes 6″–16″) to exact historic specifications. • Provide approved sample/mock‑up for each block type before full production; non‑conforming blocks must be replaced at no cost. • Deliver assembled blocks (shells unpainted, hardware galvanized) to the park between 8 am‑3 pm on weekdays, with 24‑hour prior notice.