SA-STCW-L2.1

Deck certificates: OOW, Chief Mate and Master

SA-STCW-M2 · Certificates of competency · SA-STCW-M2-A The deck and engineering certificates SAMSA issues, their limits and the sea service behind each.

The unlimited deck ladder runs **OOW, Chief Mate, Master**, with tonnage-limited **<3 000 GT** variants. Most of the qualifying service must be on **trading ships** of 500 or 1 600 GT.

Entry & progression — deck, unlimited

Governing: 2021 Regulations, regs 2(2) and 24 to 28; STCW II/1 and II/2. Builds on: L1.3.

SAMSA's seagoing deck ladder mirrors STCW closely. The names are plain: no "Deck Officer Class 3" any more, although you will still meet older officers who hold one.

The certificates

SAMSA certificate STCW level What it allows
Officer in Charge of a Navigational Watch (OOW) II/1, operational OOW, any tonnage, unlimited
Chief Mate (<3 000 GT) II/2, management, tonnage-limited Chief mate under 3 000 GT; OOW any tonnage
Master (<3 000 GT) II/2, management, tonnage-limited Master under 3 000 GT; OOW any tonnage
Chief Mate II/2, management Chief mate any tonnage
Master II/2, management Master any tonnage, unlimited
Master (Special Grade) National Approved training only

Sea service at a glance

All service below is on trading ships on unlimited voyages.

Target Must hold Sea service
OOW (standard entry) age 18 or over 36 months deck service, ships ≥500 GT, incl. 6 months supervised bridge watchkeeping, training record book
OOW (accelerated) age 18 or over, accredited programme 12 months, ships ≥500 GT, record book, incl. 6 months supervised watchkeeping
Chief Mate (<3 000 GT) OOW 12 months as OOW, ships ≥500 GT
Chief Mate OOW 12 months as OOW, ships ≥1 600 GT
Master (<3 000 GT) Chief Mate or CM (<3 000 GT) 24 months, of which 12 as chief mate, ships ≥500 GT
Master (<3 000 GT) OOW 36 months as OOW, ships ≥500 GT
Master Chief Mate 24 months, of which 12 as chief mate, ships ≥1 600 GT
Master OOW 36 months as OOW, ships ≥1 600 GT

Each also requires approved education and training at an accredited institution and the Level 3 oral.

Reading the numbers

Two routes to Master exist. The conventional one goes OOW, then 12 months as OOW for Chief Mate, then 24 months (12 as chief mate) for Master: 36 months of officer time after OOW. The other skips the Chief Mate certificate but demands 36 months as OOW. Same total; the difference is whether you sit the Chief Mate oral on the way.

CAUTION — The 1 600 GT line Unlimited Chief Mate and Master service must be on ships of 1 600 GT or more. Service on a 1 200 GT vessel counts only towards the <3 000 GT certificates, whose threshold is 500 GT.

Watchkeeping evidence

Regulation 11 requires watchkeeping certificates signed by the Masters you served under, stating you kept a watch for at least eight hours in every 24 claimed. A first deck officer certificate needs watchkeeping testimonials from Masters. MN 20 of 2016 adds that watchkeeping time is calculated from the last six months of service, and that at least one-third of claimed service must be eight-hour watches for a higher certificate. Check the current Notice before relying on that detail.

Where yachts fit

The table says "trading ships" throughout. Service on a yacht used solely for pleasure does not meet that description. A commercially operated yacht may be accepted under the commercial-gain test, but a certificate built mainly on non-trading service can be limited to non-trading vessels. Lesson 4.2 deals with this properly.

TIP — The ex-cadet advantage South Africans who came through a cadetship on bulk carriers or tankers often hold an unlimited OOW or Chief Mate CoC before joining yachts. That certificate, with a UK FSE, can let them start on a yacht as a watchkeeper rather than deckhand. See Lesson 4.3 and From South Africa to Superyachts.

Practice questions

5 questions

recall · core

How much sea service does a standard (non-accelerated) OOW candidate need? (a) 36 months (b) 24 months (c) 18 months (d) 12 months

recall · core

An OOW wants the unlimited Chief Mate CoC. What service is required? (a) 24 months on any ship (b) 6 months as OOW on ships of 3 000 GT or more (c) 12 months as OOW on ships of 500 GT or more (d) 12 months as OOW on trading ships of 1 600 GT or more

recall · core

What minimum period of supervised bridge watchkeeping must an OOW candidate have? (a) 6 months (b) 12 months (c) 9 months (d) 3 months

recall · core

A Chief Mate applying for Master (unlimited) needs how much sea service? (a) 36 months as OOW on ships of 500 GT or more (b) 24 months, of which 12 months as chief mate on trading ships of 1 600 GT or more (c) 12 months as chief mate (d) 18 months as chief mate

scenario · core

A SAMSA OOW has served 14 months as OOW on a 1 250 GT research ship on unlimited voyages. Which chief mate certificate can that service support? (a) Chief Mate (unlimited) (b) Master (unlimited) (c) Neither, research ships never count (d) Chief Mate (<3 000 GT)

Independent study. xplor is not a SAMSA-accredited training provider and awards no certificate or Certificate of Competency. Every SAMSA certificate requires approved training at a SAMSA-accredited institution, documented sea service and assessment by SAMSA, including the Level 3 oral where applicable; nothing in this course counts towards those requirements. AI-drafted content pending subject-matter-expert review.