TWIC info, from USCG site, FYI

[HAwkcharter]

Will these rules affect all Merchant Mariners?
Yes. All credentialed U.S. merchant mariners must obtain a TWIC. This includes all persons holding a Coast Guard-issued merchant mariner's license, merchant mariner's document (MMD), Standards of Training, Certification and Watchkeeping (STCW) Certificate, or certificate of registry (COR). With the implementation of TWIC, the Coast Guard MMD would primarily serve as proof of the bearer's professional qualifications. The Coast Guard has drafted a supplementary proposed rule (published in the same Federal Register edition as the TWIC final rule) that proposes to combine the elements of all four current merchant mariner professional credentials into one certificate called the Merchant Mariner Credential (MMC). The Coast Guard and TSA are streamlining the process for the two credentials to reduce costs, duplication of effort, and processing time for mariners. If the MMC proposed rulemaking is finalized as currently written, the Coast Guard would begin issuing the MMC in September of 2008 and would phase in the replacement of mariner's current credentials over a period of five years. Mariners would be issued their credential in the form of an MMC at the time they renew their current credential, or when applying for a new credential. The proposed rulemaking would not affect the validity of a mariner's current credential.

(Just an FYI....)