At Lake Windermere, Derwent Water, and Ullswater you can rent rowboats (most are big enough for a family of four).
Rowboats are not available for rent at Derwent Water.
mnli hypothesis: Rowboats are not available for rent at Derwent Water. premise: At Lake Windermere, Derwent Water, and Ullswater you can rent rowboats (most are big enough for a family of four).