maintenance crew poses in front of large vessel at shipyard dry dock. engineers in hardhats, coveralls stand ready for

blue cargo collar commercial construction coveralls craftspeople crew daytime dock docked dockside dockyard dry engineering engineers fabrication floating gear hardhats helmets industrial industry labor logistics machinery maintenance marine maritime men metalwork nautical naval offshore outdoor overhaul port professional refit repair repairmen repairs safety sea servicing setting ship shipbuilding shipping shipwrights shipyard skilled team teamwork trade transport uniform vessel watercraft welding workers workwear