How does a rowing regatta work?
Crews race side by side over a set distance, in boats classified by number of rowers, number of oars each, and whether there is a coxswain — and the notation on a results sheet encodes all of it.
Sweep versus sculling — the fundamental division.
Sculling — each rower holds two oars, one in each hand.
Sweep — each rower holds one oar with both hands, so each rower faces a side and crews must be balanced.
The boat classes, written as a number plus a symbol:
1x, 2x, 4x, 8x — sculling boats: single, double, quad, octuple.
2-, 4-, 8- — sweep boats without a coxswain (coxless).
2+, 4+, 8+ — sweep boats with a coxswain (coxed). The eight is always coxed.
So "4-" is a coxless four and "4x" is a quadruple scull, which are different boats entirely.
The standard racing distance internationally is 2000m, on a straight, multi-lane course with a standing start. Times are roughly five and a half to seven minutes depending on boat class.
The format. Because courses have limited lanes, regattas use heats, then repechages — a second chance for crews that did not qualify directly — then semi-finals and finals. The repechage is a distinctive feature and means an early defeat is not necessarily fatal.
Head races are the other format entirely: crews start at intervals and race against the clock over a longer distance, typically on a river, because the course is unsuitable for side-by-side racing. Results are by time, not by position on the water.
Bumps racing, used at Oxford and Cambridge, has crews chase each other along a narrow river attempting to catch the boat ahead.
What the coxswain does: steers, calls the race plan, manages rate and pressure, and motivates — an active tactical role, not a passenger. There is a minimum weight, with deadweight added if the cox is lighter.
Lane draw matters where wind or stream is uneven, which is why lane allocation follows heat performance.