The harbour, boats and horizon can be seen in the distance, while the portrait layout with plenty of sky provides copy space, so that the image can be used as a poster, banner, or similar background to writing.
Relevant image keywords:
beach, blue, blue sky, boats, coastline, distant, dorset, england, floating on water, group of objects, harbour, horizon, landscape, looking at view, nature, nautical vessel, sand, scenics, sea, seascape, seaside, seaside resort, sky, summer, summer holiday, sunny, swanage, tide, tourist resort, town, traditional culture, tranquil scene, travel, travel destinations, travel locations, uk, vacations, viewpoint, water, wave, yacht, yachts