The Boat Race public tests are in November at the British Indoor Rowing Championships, where each university sends around 20 rowers to compete. Everyone races 2 km on an indoor rower with the club presidents using adjacent machines. Both universities also send crews to the Head of the River Fours race in London, which is raced over the reverse Boat Race course, that is to say the Championship course from Mortlake to Putney. In December, the coaches put out "Trial Eights" where two crews from the same university race each other over the full Boat Race course. These crews are given names such
The Boat Race 1846 was rowed on the ebb tide, from Mortlake to Putney. For the first time in the history of the race, both boats used outriggers. Cambridge "rowed in an outrigger built by Searle, 60 ft in length, 2 ft 8 in in breadth", while Oxford's boat was "expressly built for this match by King of Oxford" and 58 ft 6 in long. Both crews had professional coaches: Oxford used John Noulton while Cambridge were trained by Robert Coombes, a champion sculler. It marked the start of the debate over the use of professional coaches which was not resolved until the 1852