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Second officer maritime is one of the most demanding — and most rewarding — positions on the bridge team. Responsible for the vessel’s safety equipment, navigation watch, and GMDSS communications, the 2nd Officer sits at the intersection of seamanship and shipboard safety management. This guide covers everything you need to know: the role’s core duties, the certificates required, typical salary ranges, and how to progress toward Chief Officer and beyond.

Additionally, whether you’re a Third Officer eyeing your next step or a cadet plotting your long-term career path, understanding what the Second Officer role truly demands — not just the job description — will help you get there faster and perform better once you do.

What Does a Second Officer Do? The Dual Role Explained

The Second Officer carries two distinct responsibilities that few other shipboard roles combine: ship’s safety officer and navigational watchkeeper. On most vessels, the 2nd Officer stands the 12–04 watch (midnight to 4am, noon to 4pm), manages all lifesaving appliance (LSA) inspections, maintains chart folios and ECDIS voyage planning systems, and operates the GMDSS radio installation.

In practice, this dual role means the 2nd Officer must be competent in both the technical aspects of navigation and the procedural demands of shipboard safety compliance. It is not a passive position — it requires proactive ownership of safety systems and a methodical approach to maintenance records.

“The Second Officer role taught me discipline I carry to this day,” says a veteran Chief Officer with 18 years at sea on tankers and bulk carriers. “You own the lifeboats, you own the charts, you own the watch. If something goes wrong with any of those, it comes back to you — and that accountability shapes the kind of officer you become.”

Key Duties of a Second Officer

Furthermore, day-to-day responsibilities vary by vessel type, but the following duties are standard across most commercial ships:

Navigation and Bridge Watch

• Keeping the 12–04 navigational watch at sea
• Voyage planning and passage plan preparation in line with company SMS
• ECDIS chart updates and route monitoring
• Radar and ARPA target management
• Completion of the Official Log Book entries for watch periods

Safety Officer Duties

• Monthly inspection of all lifeboats, rescue boats, life rafts, immersion suits, and EPIRBs
• Maintaining LSA and fire-fighting appliance (FFA) service records
• Organising and running fire, abandon ship, and man overboard drills
• Updating the Muster List and emergency station assignments
• Liaising with flag state and class surveyors during LSA inspections

GMDSS and Communications

• Maintaining and operating all GMDSS equipment (INMARSAT, Iridium, NAVTEX, EPIRB)
• Testing radio equipment daily and logging results
• Holding a valid GMDSS General Operator Certificate (GOC)
• Sending and receiving distress alerts and MSI broadcasts

Cargo and Cargo Documentation (Vessel Dependent)

On some vessel types — particularly bulk carriers and general cargo vessels — the 2nd Officer may also assist with cargo planning, draft surveys, and cargo documentation. On tankers, this typically falls more to the Chief Officer. Know your vessel type before joining.

Qualifications Required to Become a Second Officer

However, every second officer maritime professional must meet a minimum qualification standard. The baseline requirement for a Second Officer role on a seagoing vessel is the STCW Officer of the Watch (OOW) certificate, issued under STCW Regulation II/1. In practice, most shipping companies also require several supporting endorsements before they’ll offer a 2nd Officer contract.

Mandatory Certificates for a Second Officer Maritime Role

Here is the full qualification package most employers expect:

• STCW II/1 — Officer of the Watch (Deck): The core certification. Requires a minimum of 12 months approved sea service as a deck cadet/rating, plus completion of an approved maritime education programme.
• GMDSS General Operator Certificate (GOC): Mandatory for any officer standing a radio watch or acting as ship’s radio officer. Covers distress procedures, SOLAS Chapter IV, and equipment operation.
• ENG1 Medical Certificate: Confirms medical fitness for seafaring duties. Must be current and valid throughout the contract.
• Basic Safety Training (BST) — STCW VI/1: Personal survival techniques, fire prevention, elementary first aid, and personal safety/social responsibility.
• ARPA/Radar Operator Certificate: Required under STCW for watchkeeping officers on vessels with ARPA fitted (virtually all commercial ships).
• Bridge Resource Management (BRM): Increasingly required by major operators, especially tanker and gas carrier companies.
• Advanced Firefighting — STCW VI/3: Required for officers with responsibility for fire-fighting operations.

For a full breakdown of which STCW certificates apply at each stage of your career, see the STCW Certification: The Complete Guide.

Second Officer Maritime Career Progression Path

The merchant navy career ladder for deck officers is well-defined. Second officer maritime typically sits at the third rung, following cadet and Third Officer roles, and precedes the Chief Officer position.

• Deck Cadet — Approximately 12 months approved sea service. Completes BST, navigational watchkeeping training, and shipboard safety familiarisation.
• Third Officer / Officer of the Watch (OOW) — First watchkeeping certificate. Usually responsible for cargo or mooring operations on larger vessels. Gains confidence on the bridge before stepping up.
• Second Officer — Safety officer + 12-04 watchkeeper. Begins building detailed knowledge of LSA regulations, SOLAS requirements, and advanced navigation systems.
• Chief Officer (Chief Mate) — Holds STCW II/2. Responsible for cargo operations, stability, crew management, and ISM compliance. Directly deputises the Master.
• Master (Captain) — The senior command certificate (STCW II/2, unlimited). Full command responsibility for the vessel, crew, cargo, and environment.

Consequently, most officers spend two to four years as Second Officer before sitting their Chief Mate oral examination. The timeline depends on sea service accumulation, company promotion policy, and flag state requirements. For more on the Chief Officer role that follows this step, read the Chief Officer Career Path guide.

Second Officer Salary: What to Expect

Second Officer salaries vary considerably depending on vessel type, flag state, company, and trade route. The figures below reflect gross monthly earnings (before flag-state or home-country tax obligations).

• Bulk Carriers / General Cargo: $3,500 – $4,800 per month
• Container Vessels: $4,200 – $5,500 per month
• Oil Tankers (crude/product): $4,500 – $6,000 per month
• Gas Carriers (LNG/LPG): $5,500 – $6,500+ per month
• Offshore Supply Vessels (OSVs): $4,000 – $5,500 per month
• Cruise Ships: $3,800 – $5,000 per month (with additional benefits)

As a second officer maritime professional, your negotiating position improves significantly with specialist vessel experience. ITF-affiliated union agreements (e.g., those set under the International Bargaining Forum) set minimum wage scales. Many major shipping companies pay above CBA minimums, particularly for LNG and specialised tanker trades. For a broader look at pay across all ranks, see the Seafarer Salary Guide by Rank.

How to Move Up to Chief Officer

Furthermore, progressing from Second Officer to Chief Officer requires both time at sea and deliberate professional development. The certificate itself (STCW II/2 — Chief Mate, Unlimited) demands a minimum of 36 months approved sea service at Officer of the Watch level, plus completion of an approved Chief Mate preparatory course and a successful oral examination before a flag state examiner.

Practical Steps to Accelerate Your Second Officer Maritime Promotion

Beyond the paperwork, there are practical steps that accelerate promotion:

• Own your safety role completely. Chief Officers and Masters notice 2nd Officers who run tight LSA programmes without prompting. Spotless maintenance records and well-executed drills speak louder than any verbal request for promotion.
• Take on cargo watches. Volunteering to assist Chief Officers during cargo operations on your off-watch hours builds the cargo knowledge you’ll need when you hold the senior deck officer role.
• Complete additional endorsements early. Tanker endorsements (Basic Tanker Training, Advanced Tanker Training), Dynamic Positioning (DP), or Offshore Safety/HUET certificates expand your market value and show initiative.
• Build your sea service log meticulously. Ensure every contract is accurately recorded in your Discharge Book and CDC. Flag state oral examiners will scrutinise your sea service evidence.
• Seek feedback from your Master. A direct conversation about what the Master sees as gaps — and a written appraisal — is the most efficient development tool available at sea.

To understand what the role you’re aiming for actually entails day-to-day, the Chief Officer Career Path article provides a full breakdown of duties, salary, and the step to Master.

Frequently Asked Questions

What is the main difference between a Second Officer and a Third Officer?
The Third Officer is typically the most junior watchkeeping officer and usually holds responsibility for fire-fighting equipment and emergency procedures support. The Second Officer is the designated ship’s safety officer, holds the GMDSS radio watch responsibility, manages all lifesaving appliances, and typically stands the more demanding 12–04 watch. The 2nd Officer carries greater independent accountability.

How long does it take to become a Second Officer?
From cadet entry to Second Officer typically takes four to six years. This includes 12 months of cadet sea service, completion of a maritime degree or HND programme, time as a Third Officer building watchkeeping experience, and accumulation of the sea service required for the OOW certificate. Some officers reach the 2nd Officer grade faster through intensive cadetship programmes with major shipping companies.

Do Second Officers need a GMDSS certificate?
Yes. The GMDSS General Operator Certificate (GOC) is a mandatory qualification for any officer who holds responsibility for radio communications, distress alerting, or GMDSS equipment maintenance on a SOLAS vessel. As the designated radio officer on most commercial ships, the Second Officer must hold a valid GOC.

Second Officer Maritime Salary, Vessel Types and Career Competition

What is the typical Second Officer maritime salary on an LNG carrier?
Second Officers on LNG carriers typically earn between $5,500 and $6,500 per month, making this one of the highest-paid sectors for deck officers at this rank. The premium reflects the specialist training required (including Basic and Advanced Gas Tanker certificates) and the operational demands of gas carrier watchkeeping.

Can a Second Officer work on any type of vessel?
An STCW II/1 OOW certificate (unlimited) permits service on any vessel above 500 GT on any trade. However, specialist vessel types — LNG/LPG carriers, oil tankers, dynamic positioning vessels — require additional endorsements before a 2nd Officer can serve. Always check the specific vessel type requirements before accepting a contract.

How competitive is the job market for Second Officers?
The global demand for qualified deck officers remains strong, driven by continued fleet growth and a persistent shortage of certificated officers in certain specialisations. Second Officers with tanker endorsements, DP certificates, or LNG experience command significantly better contract terms and have shorter gaps between contracts than those with general cargo experience only.

Conclusion

In practice, the Second Officer role is where a deck officer’s career truly begins to take shape — combining real watchkeeping command with ownership of the vessel’s safety systems. Master the role thoroughly, build your sea service record, and pursue the Chief Mate certificate with purpose, and the path to senior command is clearly within reach.

Ready to take the next step? Browse Second Officer and deck officer vacancies across vessel types and shipping companies at Seaplify Jobs.

For official maritime standards and further information, visit the International Maritime Organization (IMO).