- (a) The term Coast Guard Symbol means that impression stamped on the nameplates of boilers, pressure vessels, and safety valves by a marine inspector upon the satisfactory completion of the tests and inspection of the product. It may also be used by a marine inspector to identify workmanship test plates and welding samples.
(b) The impression of the Coast Guard Symbol for stamping nameplates and specimens is shown in figure 1 to § 50.10-25(b).

Figure 1 to § 50.10-25(b)—Coast Guard Symbol
[CGFR 68-82, 33 FR 18808, Dec. 18, 1968, as amended by USCG-2020-0634, 89 FR 50094, June 12, 2024]