(a) Any person may request a testing exemption under §91.1005.

(b) Any marine SI engine manufacturer may request a national security exemption under §91.1008.

(c) For marine SI engine manufacturers, marine SI engines for export purposes are exempt without application, subject to the provisions of §91.1009.

(d) For eligible manufacturers, as determined by §91.1006, manufacturer-owned marine SI engines are exempt without application, subject to the provisions of §91.1006.

(e) For any person, display marine SI engines are exempt without application, subject to the provisions of §91.1007.