The MCA Officer of the Watch (Yachts) Certificate of Competency — the STCW qualification required to stand navigational watches as a deck officer on commercially operated superyachts.
The Yachtmaster / OOW yacht track at Warsash Superyacht Academy (WSA) — part of Warsash Maritime School, Solent University Southampton — is the training route to the MCA Officer of the Watch (Yachts) Certificate of Competency (CoC), less than 3,000 GT, unlimited area. This is a UK statutory certificate issued by the Maritime and Coastguard Agency under the international STCW Convention, Regulation II/1 / Section A-II/1. The "yacht track" label distinguishes this from the standard commercial ship OOW pathway; it is designed specifically for superyacht deck officers.
WSA delivers the training across two standalone MCA-approved written examination modules, both of which must be passed before the MCA oral examination can be sat. The first module — OOW (Yachts) Navigation and Radar — runs for three weeks and covers magnetic and gyro compass, chartwork, chart correction, tides, IRPCS (ColRegs), electronic navigation aids (GNSS, ECDIS, ARPA), and bridge simulator exercises. The second — OOW (Yachts) General Ship Knowledge — runs for seven days and covers ship construction, hydrostatics and initial stability, meteorology, seamanship, SOLAS, MARPOL, CSOP, and watchkeeping responsibilities. Both module pass certificates remain valid for three years; the MCA oral exam must be sat before either expires.
Anyone working as a deck officer — Officer of the Watch or above — on a commercially operated or charter yacht of 24 m or more in load line length is required by the Large Commercial Yacht Codes (LY2/LY3) to hold an STCW II/1 CoC or an accepted equivalent. Without it, seafarers are limited to rating and crew roles aboard commercial superyachts. On private non-commercial yachts the certificate is voluntary but is the de facto industry standard for any serious officer career. All OOW candidates must follow the MCA's Modernised Officer Qualifications Syllabus (in force since 1 August 2025).
Holding the MCA OOW (Yachts) CoC opens the role of second officer or mate — and OOW watch duties — across the global superyacht fleet. The certificate is recognised under the STCW Convention by other flag states, subject to individual flag-state endorsement, making it the foundation for an international deck officer career. Many officers progress to senior officer roles aboard yachts of 500 GT and above, where the certificate is the mandatory entry qualification. A commercially endorsed RYA Yachtmaster Ocean is frequently required alongside or in addition to Master 3,000 GT for blue-water voyaging positions.