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How could LY3 and PYC code consolidation affect you?


BMT Nigel Gee carefully focus on research and development to keep their knowledge at the cutting edge of technology, regulation and best practice. The team participate in numerous working groups to help further understanding and stay ahead of future regulation. On the 11th & 12th of April, Alex Meredith Hardy, BMT’s senior Naval Architect, attended the latest of the Large Yacht (LY3) and Passenger Yacht Code (PYC) working groups, held in Amsterdam.

The revised regulatory framework being developed by the working groups consolidates the LY3 and the PYC to better regulate the needs of the superyacht community. 

BMT have selected some key pointers of interest and discussion during the meetings that may affect you when the code is applied;


  • There will be the introduction of new annexes for over the side working systems, large battery systems, recreational fire places and recreational diving systems.
  • Changes in code are going to occur for regulation of door sills, ventilators and air pipes with the aim to go back to loadline Position 1 and Position 2 approach on all 3 items.
  • A new requirement has been introduced stating you can not route ventilation into an enclosed outside space, such as forward mooring deck and enclosed side decks. This is to prevent recirculation of smoke in case of a fire. At least 30% opening will be the bench mark between an open/enclosed space.
  • Launching of rescue boats was an interesting topic discussed by the group, especially more enforcement of the requirement to avoid ‘steeply overhanging portions of the hull’.
  • There has been an introduction of ‘Occasional Workers’ to the code, therefore now providing a clear category for support staff from the Owners team.


  • A newly re-written section on windows will add clarity.
  • There are changes regarding the number of doors in engine room bulkheads, now offering one per deck, rather than only one.
  • Cayman Islands administration aim to draft some guidelines for yachts wanting to refit/convert into a PYC yacht.
  • There is a goal to increase the number of persons allowed on-board under PYC. A specific working group have been working hard on this topic. The aim is to increase the passenger / crew ratio to the region of 4 or 5:1. However, there will be additional requirements in order to balance the increased number of persons on-board.
  • There will be changes to water freeing arrangement requirements with more focus on freeing ports in the fore ship.

Jo Assael, Senior Surveyor & Yacht Codes Specialist for the Cayman Registry, and chairman of the new code development working groups comments on BMT’s involvement so far.

“Consultation with the large yacht industry has been the backbone of the new Code development and having the expertise of the likes of Alex and the BMT team contributing to the working groups has been invaluable.  Their experience with these types of vessels not only enables the Red Ensign Group to shape the regulatory framework within the current possibilities of engineering, but also help us to understand what is possible in the future.”

Please get in contact if you have any questions,  

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