Learning chapter

Deck Machinery

11 lessons

The deck machinery volume: what the machinery has to do and how it is rated, electric and hydraulic drives, the anchor windlass, mooring equipment, cargo winches and derricks, deck cranes, hatch covers, lifeboat davits, maintenance and safety on deck.

This chapter collects 11 illustrated lessons on Deck Machinery as part of Auxiliary Machinery & Shipboard Systems, ordered as they are best studied. It opens with What Deck Machinery Has To Do — Duty, Rating and Control, Electric Drives for Deck Machinery — Motors, Converters and Stalling, Hydraulic Drives for Deck Machinery — Fluid, Pumps and Circuits, Anchor Handling and the Windlass — Duties, Brake and Slipping Clutch, Mooring Equipment — Winches, Capstans, Wire Rope and Tension Control, Cargo Winches and Derricks — Duties, Union Purchase and Slewing Rigs and 5 more. Each lesson is written for MEO oral and written preparation: definitions first, then how the system behaves, then the checks and figures used in practice.

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01 What Deck Machinery Has To Do — Duty, Rating and ControlWhat deck machinery has to do: the four duties, the intermittent rating that shapes every drive, and why it must work first time after weeks idle.8 sections 02 Electric Drives for Deck Machinery — Motors, Converters and StallingElectric drives for deck machinery: the d.c. motor that holds a load stalled, Ward-Leonard and thyristor control, a.c. pole changing and stalling.9 sections 03 Hydraulic Drives for Deck Machinery — Fluid, Pumps and CircuitsHydraulic drives for deck machinery: why hydraulics suit an exposed deck, the fluid and what destroys it, fixed and variable delivery pumps and circuits.12 sections 04 Anchor Handling and the Windlass — Duties, Brake and Slipping ClutchAnchor handling and the windlass: the three duties, the brake sized by letting go, the gearing, remote control and the slipping clutch that saves the train.7 sections 05 Mooring Equipment — Winches, Capstans, Wire Rope and Tension ControlMooring equipment: winch duties, wire rope limits, automatic tension control and the tension band, spur gearing, capstans and rope handling safety.7 sections 06 Cargo Winches and Derricks — Duties, Union Purchase and Slewing RigsCargo winches and derricks: the seven requirements, fail-safe on power loss, cycle speeds and power, the steam winch, Union Purchase and slewing rigs.8 sections 07 Deck Cranes — Three Motions, Level Luffing and Safety FeaturesDeck cranes: hoist, luff and slew, level luffing geometry, what heel does to the luffing rope, speeds, the drive mechanism and the safety features.8 sections 08 Hatch Covers and Cargo Access — Types, Seals, Cleats and SurveysHatch covers and cargo access: the types, how a cover is sealed, cleat compression and gasket life, seal replacement, maintenance and the surveys.8 sections 09 Lifeboat Davits and Davit Winches — Gravity Lowering and Two BrakesLifeboat davits and davit winches: gravity lowering, the main and centrifugal brakes, the ratchet, brake testing, lifeboat engines and hydraulic cranking.8 sections 10 Maintenance of Deck Machinery — Intervals, Greasing and OverhaulsMaintenance of deck machinery: why it is scheduled and not condition based, the weekly to five-yearly intervals, brakes, hoses and the certificate file.9 sections 11 Safety on Deck — Stored Energy, Isolation and Hazardous AreasSafety on deck: stored energy in ropes and suspended loads, anchoring, mooring, cargo gear, hatch covers, lifeboats, isolation and hazardous areas.10 sections