Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p234
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 667966–671016

includes diver deterrent acoustic systems that use spark gap sources, also known as plasma sound sources.
8. B  Test, Inspection and Production Equipment
8. B. 001. Water tunnels designed to have a background noise of less than 100 dB (reference 1 μPa, 1 Hz) within the frequency range exceeding 0 Hz but not exceeding 500 Hz and designed for measuring acoustic fields generated by a hydro‑flow around propulsion system models.
8. C.  Materials
8. C. 001. 'Syntactic foam' designed for underwater use and having all of the following:
N.B.: See also 8A002.a.4.
a. Designed for marine depths exceeding 1,000 m; and
b. A density less than 561 kg/m3.
Technical Note:
For the purposes of 8C001., 'syntactic foam' consists of hollow spheres of plastic or glass embedded in a resin "matrix".
8.D.  Software
8. D. 001. "Software" specially designed or modified for the "development", "production" or "use" of equipment or materials, specified by 8A, 8B or 8C.
8. D. 002. Specific "software" specially designed or modified for the "development", "production", repair, overhaul or refurbishing (re‑machining) of propellers specially designed for underwater noise reduction.
8. E.  Technology
8. E. 001. "Technology" according to the General Technology Note for the "development" or "production" of equipment or materials, specified by 8A, 8B or 8C.
8. E. 002. Other "technology" as follows:
a. "Technology" for the "development", "production", repair, overhaul or refurbishing (re‑machining) of propellers specially designed for underwater noise reduction;
b. "Technology" for the overhaul or refurbishing of equipment specified by 8A001, 8A002.b., 8A002.j., 8A002.o. or 8A002.p;
c. "Technology" according to the General Technology Note for the "development" or "production" of any of the following:
              1. Surface‑effect vehicles (fully skirted variety) having all of the following:
                a. Maximum design speed, fully loaded, exceeding 30 knots in a significant wave height of 1.25 m or more;
                b. Cushion pressure exceeding 3,830 Pa; and
                c. Light‑ship‑to‑full‑load displacement ratio of less than 0.70;
              2. Surface‑effect vehicles (rigid sidewalls) with a maximum design speed, fully loaded, exceeding 40 knots in a significant wave height of 3.25 m or more;
              3. Hydrofoil vessels with active systems for automatically controlling foil systems, with a maximum design speed, fully loaded, of 40 knots or more in a significant wave height of 3.25 m or more; or
              4. 'Small waterplane area vessels' having any of the following:
                a. Full load displacement exceeding 500 tonnes with a maximum design speed, fully loaded, exceeding 35 knots in a significant wave height of 3.25 m or more; or
                b. Full load displacement exceeding 1,500 tonnes with a maximum design speed, fully loaded, exceeding 25 knots in a significant wave height of 4 m or more.
              Technical Note:
              For the purposes of 8E002.c.4., a 'small waterplane