Close-up of the old sail of a rustic boat on the island of Zanzibar as the sun's rays penetrate from behind

old sail boat rustic navigate zanzibar close up sun rays penetrate pirates island sunny sky wave shipwreck seaside wooden water vessel travel transportation transport ship outdoor nature wreck worn vehicle traditional stranded seashore seascape sea rusty rowing rest low angle up view equipment waterscape relaxation discovery cruise ship no people day activity voyage marina blue