The National Maritime Center (NMC) reopened on Monday and is implementing measures to address increased levels of application inventory.
· Merchant Mariner Credentials (MMC) and Medical Certifications (national endorsements only) set to expire in December 2018, January 2019, or February 2019 remain valid until May 31, 2019. (See Update 3 – Mitigation Efforts Due to Lapse in Fiscal Year 2019 Appropriations and Partial Government Shutdown.)
· Additional Information (AI) letters, Qualified Assessor...
https://www.workboat.com/news/government/national-maritime-center-reopens/