Workers in this unit group carry out deck duties aboard ship under direction of deck officers and similar duties aboard other water-borne craft. Their functions include: supervising able seamen and other deck hands engaged on maintenance and repair of ship's deck equipment, boats and other gear, cleaning decks and renewing paintwork; serving as senior deck hand to carry out such duties as steering ship, standing lookout, taking charge of lifeboats, setting up rigging and other gear; serving as ordinary deck hand to assist able seamen and to perform deck cleaning, scale-scraping, painting and other maintenance duties; performing related tasks. Ship's carpenter is classified in 9-54.55.