angles arm basket cherry-picker cleaning danger dangerous electricity elevated elevation equipment extension external Harness height heights high insulators machinery on-high perspectives power power-lines power-pole raised raised-platform risks risky safety safety-harness surface surfaces up-high washing work workman agile appearances architecture building cleaners contemporary contrast contrasting curve curved dangling distant elements exterior glass hanging high-rise light lighting linear lines metal modern ropes shadows shapes size sunlight supported supporting supports suspended suspension views wall window-cleaners windows workers workmen abandoned marine plywood old old ship rusted ship ship ashore ship on the beach ship wrecked shipwreck sunken sunken ship wooden ship wreckage wrecked