The oldest set of recorded rules dates back to the year 1840, and does not necessarily focus on form and technique, but rather on ensuring the proper steps are taken to register the crews.
"Regatta to take place on Thursday, August 20th and Friday
August 21st, subject nevertheless, to postponement by the
Stewards should the weather prove unfavourable on these days."
A set of rules from the 1898 Regatta held on the 2nd of August shows this.
"The Amateur Races to be confined exclusively to those unaccustomed to
manual labor..."
"In the labourers races ... no man who has been engaged at the cod fishery this season will be eligible to row in these races."
"In the labourers races ... no man who has been engaged at the cod fishery this season will be eligible to row in these races."
"The boat that approaches its respective given buoy first, shall, at all times have
the right of way."
Between 1981 and 1989, the rules and regulations expanded dramatically. After several amendments, these are the rules that are currently followed.
"Any coxswain putting his or her hand upon the stroke oar during
a race shall result in the crew being disqualified from that race."