MCA Opens Unlimited Yacht Command — What MSN 1858 Amendment 2 Actually Changes

If you've spent your career in the yacht sector and hit a ceiling — a certification barrier that said "go work cargo first" — the MCA's latest revision may have just removed it. MSN 1858 (M+F) Amendment 2, which replaced Amendment 1 on 18 May 2026, introduces a new class of certificate that allows UK-qualified yacht officers to serve as Chief Mate or Master on any size yacht, anywhere in the world, without leaving the industry they trained in.

The Problem It Solves

The superyacht sector has always operated on a parallel certification track to conventional merchant shipping. Officers working on yachts 24 metres and over hold MCA yacht-specific qualifications — not STCW II/2 Master Mariner tickets. That's fine for vessels up to a certain size, but as the superyacht sector has grown upwards (vessels of 3,000 GT and beyond are no longer unusual), the ceiling on yacht certificates became a real career barrier.

Under the previous framework, an officer wanting to command larger vessels ultimately needed to interrupt their career, acquire cargo vessel sea time, and sit commercial mariner exams — a significant detour that many experienced yacht officers were unwilling or unable to take. The practical result was that some of the most experienced yacht operators in the world were blocked from advancement by a regulatory structure that didn't reflect the sector they were actually working in.

What Amendment 2 Introduces

The key change is the Yacht Unlimited Certificate of Competency. The name describes its scope exactly: holders are qualified to serve as Chief Mate or Master on UK-registered yachts and sail training vessels of any size, on any voyage, worldwide. There is no GT ceiling.

This certificate is awarded through an MCA-approved pathway that recognises large yacht sea service directly — without requiring candidates to accumulate cargo vessel time as a prerequisite. Amendment 2 also updates the requirements for existing certificate grades and clarifies the pathway for sail training vessels operating under the same framework.