If your Medical is still valid, you can get away with renewing your MMC without renewing your Medical at the same time.
That being said, your MMC is invalid the second your medical is not valid. Mariners who only hold domestic (National) endorsements need to renew their medical every 5 years to keep their MMC valid. If you also hold STCW endorsements, then you need to keep your STCW medical up to date as well.
If you hold any STCW endorsement and your STCW medical is expired, your entire MMC in invalid and you cannot work under it.
If a mariner's MMC or corresponding medical is not current the entire MMC in invalid and the mariner is not allowed to work on their license until their medical and MMC are current.
We hope this made your life a little easier and if you have other questions the MM-SEAS team is always here to help!
No matter what, when you are ready to submit your application, you can choose to have the MM-SEAS staff create a perfect application, handle the USCG application fees and work with the USCG on your behalf to resolve any issues for a flat fee of $349 or you can choose to submit on your own.
Pro MM-SEAS members get access to unlimited live 1 on 1 calls with one of our USCG Licensing Specialists. We've found that answering questions live with screen sharing in a video call makes both of our lives easier. Pro MM-SEAS members can access these features inside of MM-SEAS under License Guidance.
Nate has over 15 years of professional maritime experience and has hawsepiped his way to a 3rd Mate Unlimited Endorsement with full STCW compliance. He is proud veteran of the NOAA Commissioned Corps.