anchored climb climbing danger dangerous dangers grip gripping Harness height high hoisted hold holding immobilised immobilized lines maintenance maritime mast plank repairs rigger rigging risk risks risky rope ropes safety safety-equipment safety-harness sailing seat seated seaworthy secured securing security ship stop stopped suspend suspended tall-ship tough transport vessel work workman blue colors colours deck dutch emblem emblematic fabric flag flapping fluttering flying historic iconic material movement national nautical nederland Netherlands ocean-going Patriotic patriotism port red red-blue-&-white sign strength stripes symbol symbolic tall-ships textile white