Code of Federal Regulations Title 46. Shipping § 46.502.55 Effective date of rules

(a) As otherwise provided by the Commission for good cause found that notice and public procedure thereon are impractical, unnecessary, or contrary to the public interest;

(b) In the case of rules granting or recognizing exemption or relieving restriction;  interpretative rules;  or statements of policy.

(c) Interpretive rules, general statements of policy, or rules of agency organization, procedure, or practice. [Rule 55.]