97 STAT. 544 PUBLIC LAW 98-89 —AUG. 26, 1983 (2) not more than 50 percent of the number of able seamen required on board other vessels. (d) Individuals qualified as able seamen—offshore supply vessels under section 7310 of this title may constitute all of the able seamen required on board a vessel of less than 500 gross tons engaged in support of exploration, exploitation, or production of offshore min- eral or energy resources. (e) When the service of able seaman—limited or able seamen— special is authorized for only a part of the required number of able seamen on board a vessel, the combined percentage of those individ- uals so qualified may not be greater than 50 percent of the required number. § 7313. General requirements for members of engine departments (a) Classes of endorsement as qualified members of the engine department on vessels of at least 100 gross tons (except vessels operating on rivers or lakes (except the Great Lakes)) may be prescribed by regulation. (b) The ratings of wiper and coal passer are entry ratings and are not ratings as qualified members of the engine department. (c) An applicant for an endorsement as qualified member of the engine department must provide satisfactory proof that the applicant— (1) has the service required by section 7314 of this title; (2) is qualified professionally as demonstrated by an applica- ble examination; and (3) is qualified as to sight, hearing, and physical condition to perform the member's duties. § 7314. Service requirements for qualiHed members of engine departments To qualify for an endorsement as qualified member of the engine department, an applicant must provide proof that the applicant has 6 months' service in the related entry rating as described in section 7313(b) of this title. § 7315. Training (a) Graduation from a nautical school vessel approved under law and regulation may be substituted for the service requirements under section 7307 or 7314 of this title. (b) The satisfactory completion of other courses of instruction approved by the Secretary may be substituted for not more than one-third of the required service on deck at sea under sections 7307- 7311 of this title. (c) The satisfactory completion of other courses of instruction approved by the Secretary may be substituted for not more than one-half of the required service at sea under section 7314 of this title. § 7316. Lifeboatmen To qualify for an endorsement as lifeboatman, an applicant must provide satisfactory proof that the applicant— (1) has the service or training required by regulation; (2) is qualified professionally as demonstrated by examina- tion; and (3) is qualified professionally by actual demonstration.
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