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WHO’S HIRING · MARITIME EMPLOYER DIRECTORYWho’s Hiring? Offshore & Subsea
OSVs, drillships, DP vessels, subsea construction, ROVs and offshore energy careers: which companies operate in each area, the jobs they offer, which jobs need Coast Guard credentials, and how to reach their official hiring systems.
Home › Careers › Who’s Hiring › Offshore & Subsea
By Captain Mike · 50 years at sea · former MITAGS faculty
Employer contacts and careers pages checked October 6, 2026 This is not a live job board. Current openings stay on each employer’s own website.
Offshore work is not one career.
Offshore jobs fall into four different pathways. They use different vessels, different training and, often, different credentials. Start by choosing the pathway that fits you.
Vessel Operations
7 employers
Marine crew working aboard OSVs, MPSVs, specialty vessels and support vessels.
Examples: Deckhand / OS · AB · Mate · Master · QMED · Engineer · DPO
VIEW OSV EMPLOYERS →Offshore Drilling
3 employers
Jobs aboard drillships and offshore drilling units. Some personnel are credentialed mariners, while others work in drilling, maintenance, subsea, safety and technical departments.
Examples: Marine officers · DPOs · Engine · Drilling · Maintenance · Subsea · Safety
VIEW DRILLING EMPLOYERS →Subsea & ROV
4 employers
Technical careers involving remotely operated vehicles, subsea equipment, survey, inspection and offshore construction. Many of these jobs do NOT follow the traditional Coast Guard deck-license path.
Examples: ROV Pilot / Technician · Subsea Technician · Survey · Inspection · Construction
VIEW SUBSEA & ROV EMPLOYERS →Offshore Wind
Coming next
Marine-support and turbine-maintenance careers. Employer directory coming next.
Examples: CTV / SOV crew · Wind turbine technicians
EXPLORE OFFSHORE WIND CAREERS →
A Coast Guard credential is important for many offshore vessel jobs, but not every offshore worker is a credentialed mariner.
Accuracy note: Employer requirements, contact information and job openings can change. Mariners Online provides general career guidance and links to official employer resources. Always confirm current qualifications and application instructions with the employer. Mariners Online is not affiliated with any employer listed.
Buttons marked ↗ take you to the employer’s own website in a new tab, so you will be leaving Mariners Online.
VESSEL OPERATIONSOSV / Marine Support Operators
Offshore supply vessels (OSVs), multipurpose support vessels (MPSVs), liftboats and specialty vessels carry cargo, crews and equipment to offshore platforms, rigs and projects. These are marine-crew jobs, and most require Coast Guard credentials.
Requirements vary by vessel, route and position. Always check the current employer posting.
FEATURED FOR NEWCOMERSBordelon Marine
NEW TO MARITIMEENTRY-LEVEL POSITIONSTWIC REQUIRED
What they do
Bordelon Marine operates offshore supply and support vessels from Lockport and Houma, Louisiana.
Jobs you may find
OS / Deckhand · AB · Mate · Master · QMED / Oiler · Engineer
Getting started
- Bordelon states that some entry-level positions require no previous maritime experience.
- Applicants must be at least 18.
- Applicants must possess a TWIC for offshore positions.
- Applicants must pass required physical and drug screening.
- SafeGulf training is preferred but not always mandatory.
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
Hornbeck Offshore Services
OFFSHORE MARINERSSUBSEA
What they do
Hornbeck operates offshore supply and multipurpose support vessels. Hornbeck and Helix Energy Solutions completed their merger on September 1, 2026, so Hornbeck now spans marine transportation, subsea services and well intervention. Former Helix jobs are now part of Hornbeck.
Jobs you may find
OS / Deckhand · AB · Mate · Master · QMED · Engineer · DPO-related positions · Specialty offshore roles
Getting started
- While the merged company integrates its systems, Hornbeck presents career opportunities separately for each business segment.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
Edison Chouest Offshore (ECO)
SPECIALTY VESSELSCAREER DEVELOPMENT
What they do
ECO provides offshore marine and related energy services, including renewable-energy projects, with a fleet of more than 200 specialized offshore vessels, most designed and built by Chouest.
Jobs you may find
OS · AB · Mate · Master · QMED · Engineer · DPO · Specialty vessel positions
Getting started
- ECO provides employee and onboard crew training through its Training Center and Chouest Academy. These are training programs for ECO personnel, not public entry-level schools.
- ECO has explicitly welcomed young mariners and students as applicants. That does not confirm a current beginner opening.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
Harvey Gulf International Marine
OSVCAREER DEVELOPMENT
What they do
Harvey Gulf provides offshore marine transportation and supply-vessel services, with operations at Port Fourchon, Louisiana.
Jobs you may find
OS / Deckhand · AB · Mate · Master · QMED · Engineer · DPO
Getting started
- Harvey Gulf says it hires experienced, qualified personnel. Its new-hire training does not mean the company hires beginners.
- Each newly hired mariner receives a mentor and on-the-job training.
- Harvey Gulf encourages applicants to submit documents such as a résumé, biography, Z-Card (MMC), STCW endorsement, Social Security card, SafeGulf, TWIC, and other licenses or training certificates. These are examples, not a list of items every applicant must have.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
SEACOR Marine
OSVGLOBAL OFFSHORE
What they do
SEACOR Marine provides global offshore support and marine transportation.
Jobs you may find
OS / Deckhand · AB · Mate · Master · QMED · Engineer
Getting started
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
Tidewater
GLOBAL OFFSHOREOSV
What they do
Tidewater is a major global offshore supply vessel operator. Some jobs may be international. This listing is for the Houston-based offshore vessel operator, not Tidewater Barge Lines in Washington State.
Jobs you may find
OS / Deckhand · AB · Mate · Master · Engineer · DPO
Getting started
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
Aries Marine
ENTRY-LEVEL POSITIONSMILITARY FRIENDLYPUBLISHED CREDENTIAL REQUIREMENTS
What they do
Aries Marine operates liftboats and offshore supply vessels from south Louisiana.
Jobs you may find
OS / Deckhand · Cook · AB · Oiler · QMED · Engineer · Mate · Captain
Getting started
- Aries publishes unusually specific credential requirements for each position (see the table below).
- Former Navy applicants with sea time who need instructions on obtaining an MMC and TWIC can contact Aries for guidance.
Aries Marine published credential requirements| Vessel type | Position | Requirement Aries publishes |
|---|
| Liftboats | AB | MMC with AB endorsement |
| Liftboats | OS / Deckhand / Cook | MMC with OS endorsement |
| Liftboats | Mate | Minimum 200 GRT Near Coastal Mate |
| Liftboats | Captain | Minimum 200 GRT Near Coastal Master |
| Supply vessels | AB / Deckhand | MMC with AB endorsement + STCW training |
| Supply vessels | OS / Oiler / QMED | MMC with OS endorsement + STCW training |
| Supply vessels | Engineer | Chief Engineer OSV + STCW training |
| Supply vessels | Mate | Minimum 1,600 GRT Mate OSV + STCW training |
| Supply vessels | Captain | Minimum 1,600 GRT Master OSV + STCW training |
Credentials commonly seen
Common credentials associated with vessel positions may include: MMC, TWIC, Medical Certificate, AB / Able Seafarer, RFPNW, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training where applicable.
↑ Back to the four pathways
OFFSHORE DRILLINGOffshore Drilling
Drillships and offshore drilling units drill wells in deep water. Some people aboard are credentialed mariners; many others work in drilling, maintenance, subsea, safety and technical departments.
A drillship is a vessel, but not everyone aboard works in the marine department. The drilling organization may include Marine, Drilling, Maintenance, Subsea, Safety and Technical departments. A Coast Guard credential matters for the marine department; the other departments follow different qualification paths.
Requirements vary by vessel, route and position. Always check the current employer posting.
Transocean
DRILLSHIPSGLOBAL OFFSHORE
What they do
Transocean is an offshore drilling contractor operating drillships and semisubmersible drilling rigs worldwide.
Jobs you may find
Marine officers · DPOs · Engine personnel · Drilling personnel · Maintenance personnel · Subsea personnel
Getting started
- Transocean posts offshore and onshore opportunities separately.
- Not all positions require an MMC. Marine-department jobs commonly involve maritime credentials; drilling, maintenance and subsea jobs follow other qualification paths.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with marine-department positions may include: MMC, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training. Drilling, maintenance and subsea positions have their own requirements.
Noble Corporation
DRILLING CAREERSGLOBAL OFFSHORE
What they do
Noble is an offshore drilling contractor operating drilling rigs worldwide. Noble organizes offshore work into Rig Operations, Maintenance, Subsea, Safety and Drilling.
Jobs you may find
Rig operations · Maintenance · Subsea · Safety personnel · Drilling personnel · Marine personnel
Getting started
- Not all positions require an MMC.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with marine-department positions may include: MMC, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training. Drilling, maintenance, subsea and safety positions have their own requirements.
Valaris
GLOBAL OFFSHOREDRILLING CAREERSCAREER DEVELOPMENT
What they do
Valaris is an offshore drilling contractor operating drillships, semisubmersibles and jackups worldwide. It describes training programs including an IADC-certified competency assurance program and leadership development.
Jobs you may find
Marine personnel · Drilling personnel · Maintenance personnel · Subsea personnel · Safety personnel
Getting started
- Apply only through the official Valaris Careers / Global Jobs portal.
- Not all positions require an MMC.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Common credentials associated with marine-department positions may include: MMC, STCW endorsements, Mate or Master, engineering credentials, and DP certification or training. Drilling, maintenance, subsea and safety positions have their own requirements.
↑ Back to the four pathways
SUBSEA & ROVSubsea / ROV / Offshore Construction
Technical careers involving remotely operated vehicles (ROVs), subsea equipment, survey, inspection and offshore construction.
You do not necessarily need to become a licensed deck officer to build an offshore career. ROV, subsea, survey, inspection and offshore-construction jobs follow different training and qualification paths.
Requirements vary by vessel, route and position. Always check the current employer posting.
C-Innovation
ROVSUBSEA
What they do
C-Innovation is an Edison Chouest Offshore company (an affiliate of ECO and its family of companies). It provides ROV and AUV support, subsea project management, intervention, light construction and inspection, survey positioning and vessel operations.
Jobs you may find
ROV Pilot / Technician · Subsea Technician · Survey / positioning · Engineering · Vessel crew
Getting started
- C-Innovation illustrates a nontraditional offshore career path built around ROV and subsea technical work.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Many of these jobs do not follow the traditional Coast Guard deck-license path. ROV, subsea, survey, inspection and engineering roles have their own training and qualification requirements. Vessel positions with this employer may require maritime credentials; check each posting.
Oceaneering
ROVSUBSEAMILITARY FRIENDLY
What they do
Oceaneering describes itself as the world’s largest operator of remotely operated vehicles (ROVs). Its work includes subsea technology, engineering, inspection, survey and other offshore technical services.
Jobs you may find
ROV Pilot / Technician · Subsea Technician · Engineering · Inspection · Survey · Offshore technical work
Getting started
- Oceaneering has a Veterans Recruiting program for transitioning military veterans.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Many of these jobs do not follow the traditional Coast Guard deck-license path. ROV, subsea, survey, inspection and engineering roles have their own training and qualification requirements. Vessel positions with this employer may require maritime credentials; check each posting.
Subsea7
OFFSHORE CONSTRUCTIONROVOFFSHORE MARINERS
What they do
Subsea7 delivers offshore projects and services for the energy industry, with about 15,000 people in more than 30 countries.
Jobs you may find
Officers · Deck ratings · Engine ratings · ROV personnel · Survey / inspection · Diving · Offshore construction · Project engineering · HSSEQ (health, safety, security, environment and quality)
Getting started
- Subsea7’s careers site separates All Offshore Jobs, All Onshore Jobs and Graduate Jobs.
- Offshore disciplines named by Subsea7 include Marine Operations, Offshore Construction, Survey and Inspection, Diving, ROV, HSSEQ and Project Engineering.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Offshore marine positions (officers and deck or engine ratings) commonly involve STCW certificates; because Subsea7 works internationally, the required certificates depend on the vessel’s flag. ROV, survey, diving and construction roles follow their own qualification paths.
TechnipFMC
OFFSHORE CONSTRUCTIONSUBSEA
What they do
TechnipFMC’s subsea business runs a worldwide fleet of specialized vessels for pipe-laying, diving support and construction, equipped with ROVs and flex-lay equipment and staffed by more than 2,000 offshore personnel.
Jobs you may find
Offshore marine construction · Subsea operations · Engineering · Services · Early-career programs
Getting started
- Relevant career tracks include Offshore Marine Construction, Subsea Operations, Engineering, Services and Early Careers.
- Entry requirements vary by position. Check the current employer posting.
Credentials commonly seen
Many of these jobs do not follow the traditional Coast Guard deck-license path. ROV, subsea, survey, inspection and engineering roles have their own training and qualification requirements. Vessel positions with this employer may require maritime credentials; check each posting.
↑ Back to the four pathways
COMING NEXTOffshore Wind & Renewable Marine Support
Offshore wind creates two different career paths. The employer directory for offshore wind is coming next; for now, our career guide explains the work.
Marine crew
- Master
- Mate
- Engineer
- DPO
- Deck crew
- CTV (crew transfer vessel) and SOV (service operation vessel) crew
Wind technicians
- Wind turbine technician
- Electrical technician
- Mechanical technician
- Blade repair
- Rope access
- Subsea cable
- Other technical roles
GWO (Global Wind Organisation) safety training is not equivalent to a Coast Guard MMC or an STCW endorsement. Marine crew need Coast Guard credentials; wind technicians follow a separate training path.
Starting out?
Get your TWIC and first MMC in order before you apply for offshore vessel jobs, and learn how sea time is counted.
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