46 C.F.R. § 57.05-3 Limited space qualifications.
Title 46 - Shipping
When a welder is to be qualified for welding or torch brazing of piping on board ship in a limited or restricted space, the space restrictions shown in connection with Figure 57.05–3(a) or (b) shall be used when welding and brazing the test joint. [CGFR 68–82, 33 FR 118872, Dec. 18, 1968, as amended by CGD 74–102, 40 FR 27461, June 30, 1975]
Title 46: Shipping
PART 57—WELDING AND BRAZING
Subpart 57.05—Performance Qualifications
§ 57.05-3 Limited space qualifications.