The Sigma 33 

The Sigma 33 was produced by Marine Projects from the late ’70s and was at the time, one of the latest must have sporty boats. When the ’79 Fastnet Race wreaked its havoc and many boats and crew members were lost, the designer, David Thomas was aboard a Sigma 33 prototype and, despite several knockdowns, some cracking around the coachroof, a stove-in window and split washboards, the crew refused rescue from a Dutch Naval vessel and the plucky Sigma continued to Newlyn.


The experience prompted some changes to later models of the boat but the general design had proved her pedigree in atrocious conditions.  There were 364 boats built from 1978 to 1991 and it was a runaway success. It gained a strong following as a one-design class throughout the 80s and is still in strong demand both in the UK and Ireland as a racer/cruiser.


If you are thinking about buying a Sigma 33, do contact one of the officers of the Association and we can put you in touch with other owners.  Should you wish to join, contacts are listed on this site.  Membership gives you the additional benefits of being also a member of the UK Sigma 33 Association with their ability to help with any issues or spare parts.



  • The Sigma 33 Championships 2021  Cancelled
    Thu, 23 Jun
    Royal Ulster Yacht Club
    23 Jun, 19:00 – 26 Jun, 23:00
    Royal Ulster Yacht Club, 101 Clifton Rd, Bangor BT20 5HY, UK
    Rescheduled for 2022 - Thursday the 23rd of June - Sunday the 26th of June 2022
  • 14th and 15th of August
    14th and 15th of August
    Dublin, 7 Harbour Rd, Dún Laoghaire, Dublin, Ireland
    August 14th and 15th hosted by the RIYC


Seasonal Sail Offers for Sigma 33s

We are pleased to advise the membership of the Class Association that there are opportunities to purchase sails at very competitive prices.


This offer is open only to members but if you have any queries, do get in touch with Ken Slattery on 087 2564458

National Yacht Club - 150th Anniversary Regatta

The National Yacht Clubs Sesquicentennial Anniversary Regatta has been changed to a one-day event on Saturday 5th September 2020. Entries close at 24:00 on Thursday 3rd September 2020. 

Disappointment as September's Wave Regatta at Howth Yacht Club is Cancelled Over COVID-19


Hi all,


We have provisionally rescheduled the AGM for October subject to Covid 19 advice.  Details to follow.


If you have any queries, give me a call on 087 256 4458. 


Kind regards


Ken Slattery

Hon Treasurer, Sigma 33 East Coast Association.


The Sigma 33 Championships 2020, which were to be part of the Bangor Town Regatta have been postponed to 2021.


Calm Sea
dublin bay sailing club.jpg

Sigma 33 largely all sail in Cruiser 2 and have their own results based on One Design.


Class Captain

 Joe Conway 

+353 87 1228665

Ian Bowering 
+353 86 8332655


Kev O’Brien 

+353 87 2553872