To row an ocean means to take a specially designed boat and power it by par from one shore to another. Solo or in a team, you will be at sea for many weeks and months, at the mercy of the weather with all of your supplies sealed behind hatches. It is as intensely physical as it is mental, dealing with long days of rowing and great stretches of isolation. What used to be the preserve of the independent adventurer is now increasingly becoming a recognised sport with regular organised races.