aircraft anchored balloon cable checks circular colors colours control controlled duty-pilot engineers fabric filled flight-operation gondola height helium helium-balloon high inspected inspections large limited mesh metal-cable metal-line monitored monitoring motion movement net passengers pilot piloted registered ride safe safety secure secured sights sightseeing Singapore tethered tourists views weather-limits wind-limits artefact artifact attached attachments belt color colour commodity-exchange connected contrast contrasting cowrie cowrie-shells cowry craftmanship currency cypraea-moneta Dani-people Dutch-New-Guinea exchange fibers fibres Indonesian-New-Guinea Irian-Jaya money money-belt money-cowry porcelain-like-shells surface surfaces surfacing texture textured textures trade-currency value weave West-Papua woven accommodation boats buildings clouds distant harbor harbour Haze hazy homes Hong-Kong marina masts moored moorings motor-boats mountainous mountains mountainside navigation outdoor-sports outdoors pastime popular recreation sailing sails sea security ships sight-seeing sport success tied-up tourism tourist-boat transportation travel vessels water watercraft waves wealth wooden yacht-club yachts african bark barking black-&-white black-coats black-skin Bray braying Camouflage common-zebra equids equus-quagga-boehmi erect-manes family-groups fast grant’s-zebra grazers harems herbivores herbivorous herd herds individual mammals mohawk-like-manes patterns plains-zebra social stiff-manes stripes subspecies ungulates unique unique-stripe-patterns white-fur white-stripes zebra aid alert assistance availability blanket contained danger directions emergency fire fire-blanket fire-extinguishing fire-retardant fire-safety-item flame-proof flame-resistant folded heat-minimization help helpful instructions location messages non-flammable-blanket oxygen-depriving prepared prevention protection quick-release-contraption readiness ready red safety-device sign smother storage stored tag usage wall wrap wrap-around anchorage at anchor background bay boat boat pens catamarans expanse of water Hong Kong motor boats outdoor outdoor sports outside penned pens sailors tied up trimaran yacht club