That's what the sport's world governing body has threatened to do if city authorities don't clean up their act, according to the Associated Press.
As previously reported on Afloat.ie, local Olympic officials have confirmed that the notoriously polluted waters of Brazil's largest city will not be fully cleaned as promised in time for next summer's Olympiad.
The sailing venue was slammed as "absolutely disgusting" by Irish Olympic sailing coach Ian Barker on a visit to Rio at the end of 2013.
Yet while hopes remained in the interim that city officials would make good on their assurances of safe and clean waters for sailors, those have been dashed in recent weeks – with safety concerns over floating rubbish and the discovery of a new 'super-bacteria' in one of the many sewage-filled rivers that flow into the bay.
That's not to mention similar worries over the venue for rowing and canoeing at the Rodrigo de Freitas Lagoon – recently the site of an extensive fish kill.
The situation has now prompted the ISAF to call on the International Olympic Committee (IOC) to step up the pressure on Brazil's politicians, with the sailing body's Alastair Fox claiming he and fellow officials were "frustrated with it all".
In a phone interview with the AP's Stephen Wade, Fox said: "We are going to review the situation and make some more recommendations – demands is probably the right word – to make sure things are done."
The ISAF's head of competitions also suggested that "if we have to race all the races outside the bay, if that's what it comes to, to ensure a fair regatta, then that's something we're going to explore and could do."
The AP has much more on the story HERE.