Offshore possesses perfect, very odd pitch. In just over 130 pages of the wittiest and most melancholy prose, Penelope Fitzgerald limns the lives of "creatures neither of firm land nor water"--a group of barge-dwellers in London's Battersea Reach, circa 1961. One man, a marine artist whose commissions have dropped off since the war, is attempting to sell his decrepit craft before it sinks. Another, a dutiful businessman with a bored, mutinous wife, knows he should be landlocked but remains drawn to the muddy Thames. A third, Maurice, a male prostitute, doesn't even protest when a criminal acquaintance begins to use his barge as a depot for stolen goods: "The dangerous and the ridiculous were necessary to his life, otherwise tenderness would overwhelm him."