Jack and Hamish Friend, 26, and younger brothers Euan and Arthur Friend, 24, have raised nearly £100,000 for charity since setting off on their endurance challenge just over a month ago.
Office manager Millie Frith, vet Laura-Jayne Pattinson, both 26, and finance manager Frankie Tuck, 31, are about to row 3,000 miles across the Atlantic in a 28ft boat.