IRSO membership is open to all research ship operating institutes or national research programs that are engaged in the collection of data from ships at sea and follow established protocols for the open publication of their results. The current members list can be found on the Members – National Organizations page.

With the agreement of the IRSO Chair, members are welcome to nominate guests such as commercial representatives and other stakeholders to attend meetings apart from any members only sessions included in the agenda. The current guests list can be found on the Guests – Companies & Commercial page.