46 C.F.R. § 42.25-5 Definitions of terms used in this subpart.
Title 46 - Shipping
(a) Timber deck cargo. The term “timber deck cargo” means a cargo of timber carried on an uncovered part of a freeboard or superstructure deck. The term does not include wood pulp or similar cargo. (b) Timber load line. A timber deck cargo may be regarded as giving a vessel a certain additional buoyancy and a greater degree of protection against the sea. For that reason, vessels carrying a timber deck cargo may be granted a reduction of freeboard calculated according to the provisions of §42.25–20 and marked on the vessel's side in accordance with the provisions of §42.13–30(c) and (d). However, in order that such special freeboard may be granted and used, the timber deck cargo shall comply with certain conditions which are laid down in §42.25–15, and the vessel itself shall also comply with certain conditions relating to its construction which are set out in §42.25–10. [CGFR 68–60, 33 FR 10067, July 12, 1968, as amended by CGFR 68–126, 34 FR 9016, June 5, 1969]
Title 46: Shipping
PART 42—DOMESTIC AND FOREIGN VOYAGES BY SEA
Subpart 42.25—Special Requirements for Vessels Assigned Timber Freeboards
§ 42.25-5 Definitions of terms used in this subpart.

