Credential Consulting

Tired of sifting through CFRs and NMC checklists wondering if you have enough sea time or completed the necessary requirements for an upgrade? Have you experienced delays or even have a license expire due to an issue with a previous application?

Diamond Marine Services offers a unique service with former National Maritime Center evaluators on our credential consulting team.

Once you partner with our consulting team, Diamond Marine Services will:

  • Ensure you apply for the highest possible credential
  • Pre-fill any required forms so all you have to do is sign the application
  • Collect, organize, and prepare all medical, drug test, sea service, and course completion certificates for submission
  • Vet your application prior to submission to ensure all forms are properly filled out
  • Pay any USCG evaluation and issuance fees (optional)
  • Electronically file your application directly with the USCG
  • Reduce hassle by handling communication with the NMC on your behalf
  • Represent you through a formal appeal process, if necessary
Diamond Marine Services not only takes all the hassle out of applying for an original license, raise-in-grade, modification or renewal, we formally evaluate your application by a professional using the same process as the NMC. We submit your credential with the USCG and support you until it is issued.

How does this work?

We keep our costs low by handling the entire process electronically. From document collection to application submission, everything is done online. Paper applications submitted to our office are subject to extra charges. Throughout the process, our staff is available via email, phone or text to help you along the way. Most applications follow this basic system:

    1. Determine what tier your application falls into (see info below) and pay the corresponding consulting fee to Diamond Marine Services.
    2. Proceed to our START submission page to transmit all the required information for us to begin putting together your application.
    3. Receive a fully completed application for simple signature capture.
    4. Coordinate the payment of appropriate USCG fees with our staff.
    5. Work closely with our experienced evaluators to close any open items that may prevent submission.
    6. Diamond Marine Services staff then transmits your application to the USCG on your behalf and remains available for you until you are either approved to test, or if no test is required, until your credential is issued!
Our team prides itself on working diligently to represent you. If you find yourself in a situation where you need immediate attention and help to get your credential submitted to the USCG, consider our optional RUSH service at the bottom of this page.

Check out some recent reviews of our credential consulting

Avg: 5.00 Stars based on 119 reviews.
Reviews Date
Great service
July 19,2022
Diamond Marine Services will help you every step of the way. The process can be overwhelming trying to navigate everything on your own. They are experienced and know what needs to be done, when to do it, and they follow through. I would recommend their services if you would like a stress free application process.

-- Jake K
Efficient With No Hiccups, Stalls or NMC Follow-up Questions
July 19,2022
Sam was highly-recommended to me by Neil Smith at US Captain`s Training. Sam was very knowledgable, experienced, responsive and personable...all very important for an excellent client experience. Neil Smith at US Captain`s Training is equally as excellent as Sam. I recommend both without reservation. I obtained my 50T Master License through US Captain`s Training with Neil Smith. Sam helped me upgrade my license to 100T from 50T. Both people and their businesses are excellent.

-- Captain CBE
Obtaining my 50 ton master license and working with them!
July 8,2022
These guys are most excellent at what they do. I just recently obtained my 50 ton master license. I used their services. They were definitely very helpful! They expedited the process With their service I was very confident that I would be able to obtain my license in a very timely manner which I did. They are very knowledgeable They are very skilled. They are very personable and supportive. They were always quick to respond to my questions and phone calls. I would highly recommend Diamond Marine services to anyone. Thank you

-- Capt. Ousama Assil
OUPV/Master/Towing Endorsement
May 27,2022
Sam and Diamond Services were outstanding to work with. As you know working to obtain a license is a complex and arduous process. Sam explained what I was in for and it went exactly as he had predicted. His guidance and advice was absolutely critical. He is so available and helpful you feel like you are not going it alone. Without him I would still be in process. My advice is do not hesitate. Sign up with Sam and Diamond Services.

-- Greg Hendel
OUPV Near Coastal
May 7,2022
Worth every penny. I’ve spent decades around the industry but this was my first time going for my MMC.. I was initially hesitant about the cost, but Diamond Marine did not disappoint. Sam was a complete professional, providing excellent customer service throughout the entire process. His proactive approach to helping me get my paperwork and requirements complete was very helpful. He quickly returned my calls and was always available to answer any questions I had. I always felt as a customer that I was a top priority, The strong working relationship he has with the Coast Guard paid off in that I was able to get my credential much quicker than I could’ve on my own. Thanks again Diamond Marine and thanks Sam for your diligent professionalism and service!

-- Mark Willis
Check out our REVIEWS page for more!

How much does this cost?

The cost of our service depends on the application we are preparing on your behalf. The consulting fees are broken out into three tiers. At the bottom of this page, you can choose additional optional services.

Tier 1

  • Original Entry Level MMC to include OS, Wiper, Steward`s Department and Food Handler
  • Duplicate Credential


Tier 2

  • Original MMC with a rating such as AB, QMED, Lifeboatman, Tankerman
  • Renewal of any credential with rating endorsements and/or officer endorsements
  • Modification or Increase-In-Scope- Any rating or officer endorsement


Tier 3

  • Raise-In-Grade – Officer endorsements
  • Original MMC – Officer endorsements


Ready to submit your information?

If you`re ready to begin the process, the Start Here button will direct you to our submission form to provide us with all the information we need to get your application going!

What if I only need some guidance?

Sea Service Evaluation
Are you are considering an upgrade or renewal and not quite sure if you have enough sea service? Do you want to upgrade your credential in the future and want some guidance as to what can you do to prepare or what you qualify for? If so, then you should check out our SEA SERVICE EVALUATION.


PAY.GOV Processing
Enable our staff to process the appropriate USCG application & issuance fees on your behalf. The exact amount of the fee for your application will be coordinated with you prior to submission.


Sea Service Evaluation
The Sea Service Evaluation allows you to submit sea service records as a first step to see what credential you qualify for. It may also be used to answer the question: “if I want to go for a higher license, how much time and on what tonnage does it have to be for me to qualify?”

NOTE: $100 CREDIT will be issued towards a future application!


RUSH 48 – 2 Business Day turnaround
The RUSH fee guarantees a fully prepared application for USCG submission within 2 business days. Application submission is only possible if the mariner provides us with all required documentation and presumes the submitted information is in order.


Records Request Service
This optional service enables the credential consulting team to request records of previously submitted certificates and applications from the National Maritime Center on your behalf


Scanning & Handling Service
Paper application processing option for mariners that prefer to mail supporting documentation to our office