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How do I get my USCG Master 100 GRT Near Coastal Captain's License?

Updated: 10 hours ago

There are five main paths to obtaining your 100 ton Master Captain's license. Your right path depends on how many sea days you have in the deck department while working on Near Coastal and Ocean Waters.

In addition to what you currently have, you should also think about what you want to do with your USCG License.


Tonnage limitations will apply if you are on smaller boats. Do not worry about them, just focus on getting the right type of license and then worry about tonnage limitations later! For a mate and a master under 200 GRT all you need is sea time while holding your license to remove them. Here's a blog post that goes into detail.


Path 1 Go straight to Master 100 GRT Near Coastal under 46 CFR § 11.428

This is the most straightforward path to becoming a Master 100 GRT Near Coastal. You only need 720 sea days in the deck department, with 360 of them on Near Coastal or Ocean Waters.


Here's an in depth blog post for getting your Master 100 GRT Near Coastal under 46 CFR § 11.428


Path 2 Get your Master 200 GRT Near Coastal under 46 CFR § 11.426 with a tonnage limitation of 100 GRT

This is a much more complex path for people whose final goal is a Master 200 GRT Near Coastal. The path we recommend takes a few steps but it's great if your low on sea days and cash right now.


Step 1 is obtaining your Mate 200 GRT Near Coastal under 46 CFR § 11.427.

Step 2 is obtaining a Master 200 GRT Near Coastal under 46 CFR § 11.426.


The great part is that you can Increase in Scope from Mate 200 GRT Near Coastal to Master 200 GRT Near Coastal without taking a test or course. All you need is seatime once you hold that Mate 200 GRT Near Coastal no matter what the tonnage limitation is!


Here's an in depth blog post for getting your Master 200 GRT Near Coastal under 46 CFR § 11.426 with a tonnage limitation of 100 GRT


Path 3 Increase in Scope from Master 100 GRT Inland to Master 100 GRT Near Coastal

Because you hold a Master 100 GRT Inland under 46 CFR § 11.457 you can take an "Upgrade" course from Master 100 ton from Inland to Near Coastal. You only need 720 sea days in the deck department, with 360 of them on Near Coastal or Ocean Waters.


Here's an in depth blog post for increasing your Scope from Master 100 GRT Inland to Master 100 GRT Near Coastal


Path 4 Increase in Scope from Mate 200 GRT Near Coastal to Master 200 GRT Near Coastal with a tonnage limitation of 100 GRT.

Because you already hold your Mate 200 GRT Near Coastal under 46 CFR § 11.427. You just need a total of 720 sea days in the deck department, with 360 of them as a Master, Mate or Operator while holding your MMC as a Master, Mate or OUPV and 360 of the sea days must be on Near Coastal or Ocean Waters.


The great part is that you can Increase in Scope from Mate 200 GRT Near Coastal to Master 200 GRT Near Coastal without taking a test or course. All you need is seatime once you hold that Mate 200 GRT Near Coastal no matter what the tonnage limitation is!


Here's an in depth blog post for increasing your Scope from Mate 200 GRT Near Coastal to Master 200 GRT Near Coastal with a tonnage limitation of 100 GRT.


Path 5 Increase in Scope from OUPV to Master 100 GRT Near Coastal

Because you hold a OUPV Inland or Near Coastal under 46 CFR § 11.467 you can take an "Upgrade" course from for OUPV to Master 100 ton Near Coastal. You only need 720 sea days in the deck department, with 360 of them on Near Coastal or Ocean Waters.


Here's an in depth blog post for increasing your Scope from OUPV to Master 100 GRT Near Coastal.


What about my tonnage?


To qualify for a 100 ton

If you have 180 days on vessels 51 GRT or larger OR 360 days on vessels 34 GRT or larger you qualify for a 100 ton.



To qualify for a 50 ton

If you have 180 days on vessels 26 GRT or larger OR 360 days on vessels 17 GRT or larger you qualify for a 50 ton.



I don't qualify for 50 or 100 ton with my current sea time. What do I do?

No worries! Tonnage limitations will apply if you are on smaller boats. This also makes sense as you will probably be working on smaller boats anyway. We recommend not worrying about them and just focus on getting the right type of license for what you currently want to do.



Tonnage limitations are really simple and easy to remove with just 90 sea days once you hold your new MMC! For a mate and a master under 200 GRT all you need is sea time while holding your license to remove them.



We hope this made your life a little easier and if you have other questions the MM-SEAS team is always here to help!


We do prefer to answer questions live with screen sharing to make both of our lives easier.


We hold free live virtual master classes Monday and Wednesday from 5:00 - 5:30 pm PT inside of mmseas.com under License Guidance and then Daily Office Hours.


Pro MM-SEAS members get access to our daily live master classes and office hours Monday thru Friday from 5:00 - 5:30 pm PT. You also get access to unlimited live 1 on 1 calls with one of our USCG Licensing Specialists. Pro MM-SEAS members can access these features inside of mmseas.com under License Guidance.

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