46 CFR 91.60-40 - Duration of Convention certificates.
(a) The following certificates are valid for a period of not more than 60 months.
(1) A Cargo Ship Safety Construction Certificate.
(2) A Cargo Ship Safety Equipment Certificate.
(3) A Safety Management Certificate.
(4) A Cargo Ship Safety Radio Certificate.
(b) An Exemption certificate must not be valid for longer than the period of the certificate to which it refers.
(c) A Convention certificate may be withdrawn, revoked, or suspended at any time when it is determined that the vessel is no longer in compliance with applicable requirements. (See § 2.01-70 of this chapter for procedures governing appeals.)