Last updated 2026-08-18
TL;DR
Colorado does not issue a state captain's license. To legally carry paying passengers on a boat in Colorado, you need the federal USCG Operator of Uninspected Passenger Vessels (OUPV) credential, issued by the U.S. Coast Guard's National Maritime Center. The total federal cost runs roughly $100-$200 depending on exam center fees. There is no state board to contact for the license itself.
Do you need a license to be a six-pack captain in Colorado?
Yes, and the license is federal, not state. Colorado has no state-level captain's license or maritime board that approves six-pack operators. The credential you need is the USCG OUPV, formally called the Merchant Mariner Credential (MMC) with an Operator of Uninspected Passenger Vessels endorsement. The U.S. Coast Guard's National Maritime Center (NMC) in Martinsburg, West Virginia is the single issuing authority for this credential across all fifty states. [1]
The term 'six-pack' is informal. It refers to the fact that the OUPV lets you carry up to six paying passengers on an uninspected vessel. If you want to carry seven or more, you'd need a different class of license entirely (a Masters credential on an inspected vessel). For guided fishing trips on a reservoir, a float trip on the Colorado River, or a charter on Dillon or Granby, the OUPV covers your operation as long as you stay at six passengers or under. [1]
Colorado Parks and Wildlife (CPW) handles boater education and motorized vessel registration in the state, but CPW does not issue anything equivalent to a captain's license and has no role in the OUPV process. [2] If someone tells you there's a Colorado 'six-pack captain board,' they're either confusing it with a state that does have a supplemental maritime office (like California or Alaska) or they're describing a recreational boater safety class, which is a different thing entirely.
What does the federal OUPV actually require?
The NMC lays out five main requirements for a first-time OUPV applicant. [1]
| Requirement | Minimum threshold |
|---|---|
| Sea service days | 360 days on the water, 90 of which in the last 3 years |
| Near-coastal vs. inland route | Inland route requires days on inland waters; near-coastal adds offshore days |
| First Aid / CPR | Current certification |
| Physical exam (CG-719K) | Signed by a licensed physician |
| Drug screening (CG-719P) | SAMHSA-certified lab within 185 days of application |
Sea service is usually the longest part of the timeline for someone in a landlocked state like Colorado. You don't need to have worked on a boat commercially. Days as a recreational boater count if they're properly documented. The NMC's Sea Service form (CG-719S) is what you use, and it needs to be signed by someone who witnessed or can verify your time. [3]
First Aid and CPR certs from the Red Cross, American Heart Association, or similar groups are accepted. They need to stay current through the life of your credential, which renews every five years. [1]
The physical exam is done by any licensed physician and covers vision, hearing, and general fitness for duty. The drug screen goes through a DOT/SAMHSA-certified collection site, and the lab report goes to the NMC separately from the rest of your application packet. [3]
How much does a six-pack captain license cost in Colorado?
The federal fees come from statute under 46 U.S.C. and get adjusted periodically by the NMC. As of the most recent published schedule, the MMC application fee is $45 for a five-year credential. [4] That's the government fee. It does not include the costs around it, which in practice make up the bulk of what you'll spend.
Here's a realistic cost picture for a Colorado applicant:
| Item | Typical cost range |
|---|---|
| NMC application fee | $45 |
| OUPV exam (third-party testing centers) | $75-$150 |
| Physical exam (CG-719K) | $100-$300 depending on provider |
| Drug screen | $50-$90 |
| First Aid / CPR course | $50-$120 |
| TWIC card (if operating on federally regulated waters) | $125.25 |
| Prep course or study materials | $0-$300 |
Test at a Coast Guard-accepted exam center (several operate in the Denver metro area and in Colorado Springs) and you pay a testing fee on top of the federal application fee. Some centers bundle preparation and testing together. Others charge per section. The OUPV exam covers four modules: deck safety, navigation rules, navigation problems, and deck general. [5]
Total out-of-pocket for a Colorado applicant who already has documented sea days usually lands between $300 and $700, depending on whether you need a prep course and how your medical costs shake out. That range is honest. Nobody should promise a tighter number without knowing your situation.
OUPVPath publishes a $149 one-time kit that covers study materials and application paperwork guidance for first-time OUPV applicants. You can see what's in it at /start. Compare it to other prep options. The federal fees above are what you pay regardless of which prep route you choose.
How long does getting a six-pack captain license take in Colorado?
The honest answer is three months to over a year, and it hinges almost entirely on how long it takes you to build sea service days.
If you already have 360 documented days on the water, the active application and processing phase at the NMC typically runs 4 to 8 weeks from the time they receive a complete application. The NMC posts processing time updates online. In recent years that window has moved around. Incomplete applications (missing drug screen results, missing signatures on CG-719S) get kicked back and restart the clock. Submit a complete packet the first time. [3]
Sea service is the variable that breaks timelines for Colorado applicants specifically. The state has reservoirs (Dillon, Granby, Blue Mesa, Pueblo), the Arkansas River for whitewater, and stretches of the Colorado River, but none of these are high-traffic commercial waterways. Starting from zero recreational days means adding at least one or two boating seasons before you qualify. Each day counts as one calendar day of underway time, not hours. A two-hour fishing trip and a full day count the same. [3]
Here's the sequence I'd run. Get your First Aid and CPR certs done early, since they take a single day. Schedule your physical and drug screen once you're close to your 360 days. Submit everything to the NMC at the same time. Do not send the drug screen ahead of the rest of the application or it may expire before your packet is reviewed. The 185-day window starts from when the screen is collected. [3]
Does Colorado require any state boating safety course?
Colorado Parks and Wildlife requires a boater education certificate for anyone born on or after January 1, 1994, who operates a motorized vessel on Colorado waters. [2] This is a recreational safety requirement, not a commercial one, and it's separate from the OUPV process. The CPW-approved course (offered online through NASBLA-approved providers or in person) satisfies that state rule.
Born before 1994? Colorado does not require you to hold a boater education card to operate recreationally. [2]
For OUPV purposes, the NMC does not require the Colorado state boater safety card. The federal credential stands on its own. Taking the state course early still isn't a bad idea if you're new to boating, because the material overlaps meaningfully with the OUPV exam content on rules of the road and safety equipment.
Colorado Parks and Wildlife also requires vessel registration and, for outfitters operating commercially on certain waterways, an outfitter license through Colorado's Division of Professions and Occupations. [6] That outfitter license is separate from your captain's credential. If you're planning to run a guiding business in Colorado rather than just hold the credential, check CPW and DORA requirements before you start taking money.
What is a TWIC card and do Colorado six-pack captains need one?
A Transportation Worker Identification Credential (TWIC) is a biometric ID card issued by the TSA and required for unescorted access to secure maritime facilities under the Maritime Transportation Security Act. [7] For most six-pack operations in Colorado (reservoir fishing charters, river float trips, lake tours), a TWIC is not required, because those operations don't touch federally regulated port facilities or MTSA-regulated vessels.
If you ever operate on waters where TWIC is required, or if you later upgrade to a Masters credential, you'll need one. The fee under the current TSA schedule is $125.25 for a five-year card. [7] It's a background check plus biometrics, done at a TSA enrollment center. Denver has a TSA enrollment location.
For a Colorado-based inland OUPV operation, most applicants can skip the TWIC for now. Check the NMC's current requirements for your specific route endorsement before assuming either way.
How do you document sea service days in a landlocked state?
This is the real challenge for Colorado applicants, and it's worth being direct about it. Colorado is landlocked, but it has navigable inland waters. Boating days on reservoirs and rivers within the state count toward your 360-day requirement if they're properly documented. The NMC accepts inland water days toward an inland OUPV endorsement. [3]
The CG-719S form is your vehicle. It gets filled out and signed by a 'responsible person' who can attest to your time, which in practice can be a marina operator, a boat owner you work for, or in some cases yourself if you're documenting recreational use. The NMC gives guidance on acceptable attestors. Self-attestation for recreational days is allowed but scrutinized, so back it up with any supporting records you have: marina receipts, fishing licenses with waterway info, photos with date metadata. [3]
Some Colorado applicants build sea days by doing part-time deckhand or mate work in other states during summers, then applying from Colorado once they hit 360. That's a completely legitimate strategy. The NMC doesn't care where the days were accumulated, only that they're documented and at least 90 fall within the three years before application.
Where do you actually apply for the OUPV from Colorado?
All OUPV applications go to the NMC in Martinsburg, West Virginia. Colorado falls under the NMC's jurisdiction like every other state. There is no regional Coast Guard district office that processes MMC applications. That centralized to the NMC in 2012. [1]
You can submit your application by mail or in person at the NMC. Most applicants mail everything as a complete packet. The NMC's mailing address is: National Maritime Center, 100 Forbes Drive, Martinsburg, WV 25404.
The NMC also runs an online Mariner Licensing and Documentation (MLD) portal where you can check application status and upload some documents. [1] Set up an account early. It makes tracking your application much easier than waiting for mail.
Questions during the process go to the NMC's help line at (888) 427-5662. Wait times vary, but email through the portal usually gets a response within a few business days. Do not call the local Colorado Coast Guard Sector (Sector Heartland covers Colorado) expecting them to process your application. They'll refer you to the NMC.
What commercial waters can a Colorado OUPV captain operate on?
The OUPV endorsement comes in two route variants: inland and near-coastal (up to 100 miles offshore). For Colorado operations, you need at minimum an inland endorsement, since the state has no coastal waters. [1]
A near-coastal endorsement requires additional offshore sea days and is worth getting if you expect to ever run charters on coastal waters in other states. The NMC lets you hold both endorsements on a single MMC. If you ever want to captain a vessel in California, Florida, or along the Gulf Coast, a near-coastal OUPV gives you that flexibility.
Colorado's main recreational waters include Dillon Reservoir (Summit County), Lake Granby and Shadow Mountain Lake (Grand County), Blue Mesa Reservoir (Gunnison County), Pueblo Reservoir, and stretches of the Arkansas and Colorado rivers. Commercial passenger operations on these waters require the OUPV, and depending on the specific waterway and whether you're in a national recreation area, you may also need a special use permit from the relevant land management agency (the Forest Service or BLM). [8] That permit is separate from your captain's credential.
For river outfitters specifically, Colorado Parks and Wildlife regulates commercial outfitters under CRS Title 33, and the state requires an Outfitter's License through DORA for anyone operating a business guiding clients on Colorado waters. [6] Get both the federal OUPV and the state outfitter license sorted before you take your first paying client.
Renewing and maintaining your OUPV in Colorado
The MMC is valid for five years. Renewal requires a new physical, an updated drug screen, and a renewal application to the NMC. The renewal fee is the same $45 as the original application. [4]
You don't need to retake the written exam at renewal unless you've let your credential lapse. The NMC gives guidance on the grace period for lapsed credentials. Generally, if you're within a year of expiration, you're fine. Beyond that, you may face additional requirements. [1]
First Aid and CPR must stay current throughout your credentialing period. If they lapse between renewals, you technically aren't in compliance even if your MMC is still valid. Most providers like the Red Cross offer two-year certifications, so you'll recertify two or three times per MMC cycle. [9]
Colorado itself layers no renewal requirement on top of the federal one. You renew with the NMC and that's it. The state of Colorado won't send you a reminder, and CPW won't track your MMC status. The renewal timeline is entirely your job to manage.
Should you get a prep course, and what's actually worth the money?
The OUPV written exam has a pass rate that varies by prep method, but the NMC doesn't publish granular pass-rate data by state or prep type. The closest public data point is the NMC's exam completion statistics, which suggest a meaningful share of first-time takers need at least one retake on some modules. [5]
The navigation rules module (COLREGS/Inland Rules) and the chart navigation module trip up the most people. Years on Colorado reservoirs and rivers may give you solid boat handling instincts but limited formal navigation training. Those two modules deserve specific preparation.
Free resources: the NMC publishes the official examination guide with sample questions. [5] Chapman Piloting and Seamanship is the standard reference text most prep programs build from. The USCG Auxiliary runs free public education courses that overlap heavily with the OUPV exam content.
Paid prep options range from in-person weekend courses (often $200-$400) to online self-paced programs. OUPVPath's $149 kit is one of the more focused digital options if you prefer self-study. Whatever you choose, do the actual NMC sample questions before you sit for the exam. The format matters as much as the content.
Want to see how Colorado's path compares to states with different coast guard district requirements or state overlays? Look at neighboring states. See how Arizona handles OUPV applications and how California's state requirements add a layer on top of the federal credential to get a sense of the range.
Key contacts and resources for Colorado OUPV applicants
Here's where to actually go for each part of the process:
Federal credential: NMC, (888) 427-5662, nmchelp@uscg.mil, or the MLD portal at https://www.dco.uscg.mil/national_maritime_center/ [1]
State boater education certificate: Colorado Parks and Wildlife, https://cpw.state.co.us/boating [2]
Commercial outfitter license (if operating a business): Colorado DORA, https://dpo.colorado.gov/Outfitters [6]
TWIC (if needed): TSA, https://www.tsa.gov/for-industry/twic [7]
Drug testing: Find a SAMHSA-certified lab through SAMHSA's workplace program at https://www.samhsa.gov/substance-use/workplace [10]
Special use permits for federally managed waterways: Contact the specific Forest Service or BLM field office for the waterway you plan to use. [8]
For a comparison with a coastal state that has no additional state layer (similar to Colorado), check how Idaho structures the process. For a state with a marine board that does add requirements, see how Illinois handles it.
Frequently asked questions
Do you need a license for six-pack captain in Colorado?
Yes. You need the federal USCG OUPV (Merchant Mariner Credential with OUPV endorsement). Colorado has no state-level captain's license. The National Maritime Center in Martinsburg, WV issues the credential, and it's the same federal process regardless of what state you live in. There is no Colorado maritime board involved in issuing the license.
How much does a six-pack captain license cost in Colorado?
The federal NMC application fee is $45. Add roughly $75-$150 for the exam at a testing center, $100-$300 for the physical, $50-$90 for the drug screen, and $50-$120 for First Aid/CPR. Total out-of-pocket typically runs $300-$700 for a Colorado applicant who already has sea service documented. Prep courses add $0-$300 depending on the option you choose.
How long does getting a six-pack captain license take in Colorado?
If you already have 360 documented sea days, the NMC processes a complete application in roughly 4-8 weeks. Most Colorado applicants spend longer accumulating the sea service requirement, which can take one to two boating seasons if you're starting from scratch. The drug screen expires 185 days after collection, so time it carefully with your application submission.
Does Colorado have a state boating license for commercial captains?
No. Colorado Parks and Wildlife issues a recreational boater education certificate for operators born after January 1, 1994, but that's a safety card, not a commercial captain's license. For carrying paying passengers, you need the federal USCG OUPV only. The state has no commercial maritime licensing system.
Can I use recreational boating days in Colorado toward the OUPV sea service requirement?
Yes. Days on Colorado reservoirs and rivers count toward your 360-day inland sea service requirement. You document them on the NMC's CG-719S form, signed by a responsible person who can attest to your time. Self-attestation for recreational days is allowed but should be backed up by any supporting records you have.
Do I need a TWIC card for Colorado six-pack operations?
Almost certainly not for typical Colorado inland operations like reservoir fishing charters or river float trips. TWIC is required for unescorted access to MTSA-regulated port facilities. If you're only operating on inland Colorado waters, you can skip it for now. Confirm with the NMC if your specific route or vessel type creates any ambiguity.
What waterways in Colorado can a six-pack captain legally operate on?
An inland OUPV endorsement covers Colorado's lakes and rivers, including Dillon Reservoir, Lake Granby, Blue Mesa, Pueblo Reservoir, and the Arkansas and Colorado Rivers. Some waterways in national recreation areas also require a special use permit from the Forest Service or BLM, which is separate from your OUPV. Check with the managing agency for any specific waterway you plan to use commercially.
Does Colorado require an outfitter license on top of the OUPV?
Yes, if you're running a guiding or charter business. Colorado DORA issues an Outfitter's License under CRS Title 33 for commercial operators guiding clients on Colorado waters. The OUPV is your federal captain's credential; the outfitter license covers the business side. You need both before taking paying clients on Colorado waters.
Where do Colorado applicants take the OUPV exam?
The OUPV written exam is administered at third-party testing centers accepted by the NMC. Several operate in the Denver metro area and in Colorado Springs. You find an approved exam provider through the NMC's testing program listings. The exam covers four modules: deck safety, navigation rules, chart navigation, and deck general.
How many passengers can a six-pack captain carry in Colorado?
Up to six paying passengers on an uninspected vessel. That's the defining limit of the OUPV credential, which is where the informal term 'six-pack' comes from. Carrying seven or more paying passengers requires a Coast Guard-inspected vessel and a different class of license (a Masters credential). Non-paying guests don't count toward the six-passenger limit.
How do I renew my OUPV from Colorado?
Renew with the NMC every five years. You'll need a new physical (CG-719K), a new drug screen, and a renewal application. The fee is $45, the same as the original. Colorado imposes no additional renewal requirement. Keep your First Aid and CPR certifications current throughout the credentialing period; they must be valid at renewal.
Is the OUPV exam the same for Colorado as for coastal states?
The core exam is the same federal exam. The difference is in route endorsements: an inland endorsement covers Colorado's lakes and rivers, while a near-coastal endorsement adds offshore waters up to 100 miles out. If you want to eventually run charters on both inland and coastal waters, you can pursue both endorsements on a single MMC, which requires additional sea days on coastal waters.
Can I captain a boat for money in Colorado without the OUPV?
No. Carrying paying passengers for hire without the required USCG credential is a federal violation under 46 U.S.C. The NMC and Coast Guard enforcement take unauthorized passenger-for-hire operations seriously. 'Hire' is interpreted broadly and includes guiding fees, charter fees, and trip packages where the boat ride has value.
What's the difference between the Colorado boater education card and the OUPV?
The Colorado boater education card, issued under CPW's program, is a recreational safety requirement for younger operators of motorized vessels on Colorado waters. The OUPV is a federal professional credential that authorizes you to carry paying passengers. They're issued by completely different authorities, serve different purposes, and neither substitutes for the other.
Sources
- U.S. Coast Guard National Maritime Center, OUPV Credential Information: The NMC in Martinsburg, WV is the single issuing authority for the OUPV MMC; requirements include 360 sea days, 90 in the last 3 years, First Aid/CPR, physical, and drug screen; inland and near-coastal route endorsements exist
- U.S. Coast Guard National Maritime Center, Sea Service Documentation (CG-719S): Sea service days are documented on form CG-719S, signed by a responsible person; self-attestation for recreational days is allowed; drug screen is valid for 185 days from collection
- U.S. Coast Guard National Maritime Center, Credential Fee Schedule: MMC application fee is $45 for a five-year credential; renewal fee is also $45
- U.S. Coast Guard National Maritime Center, Examination Information: OUPV exam covers four modules: deck safety, navigation rules, navigation problems, and deck general; NMC publishes examination guide with sample questions
- Colorado Department of Regulatory Agencies, Division of Professions and Occupations, Outfitters: Colorado DORA issues an Outfitter's License for commercial operators guiding clients on Colorado waters under CRS Title 33
- TSA, Transportation Worker Identification Credential (TWIC) Program: TWIC is required for unescorted access to secure maritime facilities; fee is $125.25 for a five-year card
- USDA Forest Service, Special Uses Program: Commercial passenger operations on federally managed waterways in national recreation areas require a special use permit from the Forest Service or BLM, separate from the OUPV
- American Red Cross, First Aid/CPR/AED Training: Red Cross First Aid and CPR certifications are accepted by the NMC and are typically valid for two years