46 CFR § 153.910 - Cargo piping plan.
No person may operate a tankship unless the tankship has a cargo piping plan that:
(a) Shows all cargo piping on the tankship;
(c) Shows the cargo tanks;
(e) Emphasizes the piping and equipment described in paragraphs (a), (b) and (d) of this section by using contrasting colors, line widths, or similar methods; and