MT-3261 - Containerization and Modern Cargo Stowage

The expected outcome is that the student... Supports STCW elements...

TOPIC - Pre-stow planning, inspection and preparation of holds

  • outlines the reasons for a general inspection of cargo holds and lockers. Explains the duties and responsibilities Carriage of Goods by Sea Act.
  • lists items to be inspected
  • explains the importance of cleaning holds before loading
  • describes how to clean holds after discharge of a general cargo
  • states the reasons for using dunnage
  • describes the types and sizes of material used for dunnage
  • states the methods of dunnaging a hold for various cargoes and how to dispose of old dunnage
  • explains that dirty dunnage may taint or contaminate the next cargo
  • describes the fitting of spar ceiling and explains its purpose
  • states that bilges or drain wells should be clean, dry and sweet-smelling
  • explains how bilge suctions should be checked for efficient working
  • describes how limbers and drain well covers should be treated to prevent suctions being blocked by small debris, but ensuring free drainage to the suctions
  • states that the ballast lines to deep tanks should be blanked when preparing to load dry cargo
  • states that the use of a deodorizing wash or ozonator may be necessary to remove strong odors from a previous cargo

21B1
21C2
61D3

TOPIC - Segregation and separation of cargoes

  • explains the need for the segregation of different cargoes with reference to:
    • dangerous goods
    • toxic cargo
    • caustic cargo
    • dry cargo
    • wet cargo
    • clean cargo
    • dirty cargo
    • odorous cargo
    • delicate cargo
    • special cargo
    • ad velorum
  • describes how the cargoes are segregated
  • explains that separation between parcels of cargo for different consignees or different ports of discharge is often required
  • describes methods of separating adjacent parcels of cargo
  • describes the use of port marking to separate parcels for discharge at different ports

21B1
21B1.02
21C2
61D3

TOPIC - Securing cargoes

  • explains general safety precautions and the need for a solid stow and securing of all cargoes
  • states that cargo liable to slide during rolling, such as steel rails, should be stowed fore and aft
  • describes methods of blocking, wire lashing, shoring and tomming cargo
  • describes methods of securing cargo faces resulting from part discharge before making a sea passage
  • describes methods of securing heavy loads
  • describes methods of stowing and securing vehicles and trailers
  • states that containers, trailers, portable tanks and other cargo units should be secured in accordance with the ship's securing arrangements manual

21B1
21C2
61D3

TOPIC - Ventilation and control of sweat

  • lists the factors involved in the control of sweat by ventilation
  • distinguishes between ship's sweat and cargo sweat and explains the conditions in which each is experienced. Defines hygroscopic/non-hygroscopic cargo
  • describes the system of natural ventilation and how it should be controlled to minimize the formation of sweat
  • describes forced ventilation and humidity control for cargo holds and states the properties measured and recorded at the control panel and general safety precautions to be observed
  • explains how to operate the ventilation system described
  • states that ventilation is also required for the removal of heat, gases and odors
  • gives examples of cargoes requiring special ventilation
  • demonstrates the use of the psychometric chart and computes dew point, and relative humidity

21B1
21C2
61D3

TOPIC - Stowage of deck cargoes

  • states that cargoes, other than in containers, commonly carried on deck are:
    • dangerous goods not permitted below decks
    • dangerous goods which can be jettisoned easily
    • large units, difficult or impossible to stow below deck, which can safely be exposed to the elements or trapped over
    • cargoes which can be exposed to the weather and which would occupy a very large space below decks
  • explains why efficient securing of deck cargoes is essential for the safety of the ship as well as the cargo
  • states that stowage and securing of deck cargo should be adequate for the worst conditions which could be experienced
  • states that hatches should be securely closed and cleated before loading over them
  • states that stowage should leave safe access to essential equipment and spaces needed to navigate and operate the ship such as:
    • sounding pipes to tanks and bilges devices for the remote operation of valves
    • mooring arrangements
    • fire-fighting and life-saving equipment
    • crew accommodation and working spaces
  • states that deck cargo should not obstruct the view from the navigating bridge
  • explains that the weight of deck cargo should not exceed the maximum permissible load on the deck or hatches
  • describes how the effects of a concentrated load can be spread over a wider area by the use of dunnage and deck shoring
  • explains the effect of deck cargo on stability with reference to:
    • its vertical moment about the keel (Shift of the center of gravity GG')
    • the absorption of water or accretion of ice
    • the clearing of water from the deck in heavy weather increased reserve buoyancy of a timber deck cargo
  • describes in outline the recommendations on the stowage and lashing of timber deck cargoes as set out in the IMO Code of Safe Practice for Ships Carrying Timber Deck Cargoes
  • describes general safety practices and the use of guard lines or rails to be provided at the sides of a deck stow and at openings in the stow
  • describes the provision of means of safe access between the deck and the top of the stow
  • describes the method of safe stowage and securing of containers on deck on vessels not specially designed for the carriage of containers
  • describes appropriate logbook entries for the carriage of deck cargoes, documentation and damage reports

21B1
21B1.01
21B1.02
21C2
61D3

TOPIC - Stowage of refrigerated cargoes

  • explains how holds and refrigerated lockers are prepared for loading
  • explains the need for the pre-cooling of spaces and dunnage to be used
  • describes the dunnaging requirements for refrigerated cargo
  • gives examples of commodities carried chilled
  • gives examples of frozen cargoes
  • lists the inspections of the cargo which should be made before and during the loading
  • describes the use of brine traps in compartment drains
  • explains the purpose of compartment temperature recordings
  • describes appropriate logbook entries for the carriage of refrigerated cargoes, documentation and damage reports

21B1
21C2
61D3

TOPIC - Stowage of container cargoes

  • describes the arrangement and construction of a container ship and explains how the position or location of a particular container is designated by bay or hold/cell/tier
  • explains briefly the sequence of operations during discharging and loading at a terminal. Defines the terms gross, net and tare weights.
  • explains the factors involved in planning a container stow with reference to:
    • stability, trim and list
    • stresses
    • stack height and weight
    • dangerous goods
    • special stowage restrictions
    • special types of containers
  • describes methods of securing containers on deck with lashing rods or stacking frames or below decks in cell guides.
  • describes the typical containers in use:
    • container size
    • construction materials
    • structural components
    • types of containers
      • dry
      • open top
      • flat rack
      • liquid
      • insulated/ventilated
      • refrigerated
  • container inspection and damage reports
  • describes appropriate logbook entries for the carriage of container cargoes, documentation and damage reports

21B1
21B1.01
21B1.02
21C2
61D3

TOPIC - Stowage of deep tank cargoes aboard freight vessels

  • describes the general arrangement of:
    • cargo tanks
    • deep tanks
    • pump-rooms
    • segregated ballast tanks
    • slop tanks
    • cofferdams
    • peak tanks
    • deep tanks
  • describes pipeline arrangements to cargo oil tanks
  • describes cargo pumping arrangements to cargo oil tanks
  • describes the cleaning, preparation and inspection of deep tanks for loading a liquid cargo, in particular vegetable oil, animal oil or latex
  • describes the heating arrangements and precautions to take with heated cargoes
  • explains the need to allow sufficient ullage for expansion
  • describes the securing of deep-tank lids
  • describes appropriate logbook entries for the carriage of deep tank cargoes, documentation and damage reports.

21B1
21B1.02
21C1
21C2
21C2.3
61D3

TOPIC - Cargo-handling equipment

  • describes the general safety practices, care and maintenance of:
    • standing rigging
    • topping lifts, cargo runners, guys and preventers
    • cargo blocks and topping lift blocks
    • boom heel fittings
    • cargo gear record book, ABS Cargo Gear Register
  • describes the rigging of booms for loading and discharging cargo:
    • using married falls (union purchase)
    • by single swinging boom
  • explains how to set up guys and preventers for working with married falls
  • states that gear should be set up in accordance with the ship's rigging plan
  • describes how to change the rig from single runners to gun tackles (double-up)
  • describes how to change the rig from single runners to a "West Coast Rig"
  • describes how to top and lower booms safely
  • describes the use of slings, snotters, canvas slings, trays, pallets, nets, chain slings, cant hooks, bale hooks and vehicle slings
  • states the precautions to take when lifting bales with hooks in the bale bands
  • describes the handling of common unitized and pre-slung loads
  • compares the advantages and disadvantages of ships' cranes and booms for handling cargo
  • states the precautions to be taken when fork-lift trucks, tractors, pallet jacks or similar devices are used in the 'tween-decks or holds
  • describes cargo handling cranes
  • heavy lift boom arrangements

21B1
21C2
61D3

TOPIC - Cargo-handling safety practices

  • states that all cargo gear should be visually inspected before the start of cargo operations each day
  • states that the load on cargo gear should never exceed its safe working load
  • states that ropes, wires, blocks and loose gear should be subject to frequent inspections while in use for cargo operations
  • explains how to decide that a cargo runner needs replacing
  • states that mechanically or hydraulically operated hatches should be opened or closed by the ship's crew under the supervision of a responsible person
  • explains that hatch covers should be secured by locking devices to prevent them moving accidentally
  • states that beams and covers of partially opened hatches should be secured to prevent their accidental displacement
  • states that hatch openings should be securely fenced to a minimum height of 1 meter
  • states that it is the ship's responsibility to cover or fence hatches when notice of completion of work for the day is given by the stevedore in charge
  • states that no person should use a ladder in the square of a hatch while cargo is being hoisted or lowered in that square
  • states that no person should stand or pass under a suspended load
  • describes the provision of adequate lighting for working spaces
  • states that portable lights should be removed from cargo spaces as soon as they are no longer required
  • explains that unattended portable lights are potential fire hazards

21B1
21C2
61D3
61D3.1

TOPIC - Dangerous goods in packaged form

  • explains the different types of containment covered by the term "packaged form"
  • describes the classification of dangerous goods in the International Maritime Dangerous Goods (IMDG) Code
  • explains the properties, characteristics and physical state of the different substances, materials and articles covered by the 9 classes of the IMDG Code
  • identifies the marking, labeling and placarding of dangerous goods as required by the IMDG Code
  • states that the duty officer should have information on the quantities, types of package, proper shipping names (correct technical names), classification, stowage and segregation of the dangerous goods to be handled
  • states that the duty officer should have information on the special measures to be taken when a certain dangerous cargo is handled
  • states that the measures to be taken in the event of an incident or accident should be made known and that any necessary equipment and sufficient crew to operate it should be available
  • explains that the actions to be taken are laid down in the IMO Emergency Procedures for Ships Carrying Dangerous Goods (EmS), the IMO Medical First Aid Guide for Use in Accidents Involving Dangerous Goods (MFAG) and the International Medical Guide for Ships (IMGS)
  • states that any incident or accident during the handling of dangerous goods should be reported immediately to the person in charge of the operation
  • explains that the IMDG Code lays down the packing requirements
  • states that any doubts about the suitability and integrity of packages should be reported to the master or chief mate
  • states the fire precautions which should be taken when carrying dangerous goods
  • states the precautions which should be taken while loading or discharging explosives
  • explains the meaning of the following stowage and segregation requirements for the different types of ships:
    • on deck only
    • on deck or under deck away from
    • separated from
    • separated by a complete compartment or hold from
    • separated longitudinally by an intervening complete compartment or hold from
  • is familiar with cargo regulations contained in:
    • Cargo Miscellaneous Vessels, Subchapter I - 46 CFR Parts 90-139
    • Dangerous Cargo Regulations, Subchapter N - 46 CFR Parts 147-155
    • Hazardous Materials Regulations, Subchapter C - 49 CFR Parts 171-177
    • Chemical Data Guide
  • describes appropriate logbook entries for the carriage of dangerous/hazardous cargoes, documentation and damage reports

21B1
21B1.02
21C2
61D3

TOPIC - Bulk cargoes (other than grain)

  • describes in outline the contents of the IMO Code of Safe Practice for Solid Bulk Cargoes (BC Code)
  • defines:
    • homogeneous/non-homogeneous cargo
    • angle of repose
    • cargoes which may liquefy
    • flow moisture point or flow state
    • transportable moisture limit
  • describes in detail the preparation of cargo holds prior to loading bulk cargoes
  • describes the precautions to take prior to, during and after loading bulk cargoes
  • explains that separation between certain bulk cargoes and other bulk cargoes or packaged dangerous goods is required
  • explains that some bulk cargoes may deplete the oxygen content of holds or produce toxic gases and describes the precautions to take before entry to holds
  • describes the hazards associated with coal cargoes
  • describes the precautions to take during loading and discharging coal
  • explains how coal should be ventilated
  • explains how cargoes are fumigated while underway

21B1
21C2
61D3
61D3.3
61D3.2

TOPIC - Bulk grain cargoes

  • defines the following terms as used in chapter VI of SOLAS:
    • grain
    • filled compartment
    • partly filled compartment
  • describes the cleaning and preparation of holds and decks for the carriage of grain
  • states that a thorough check for insect or rodent infestation should be made
  • explains the importance of trimming and states how it should be done
  • distinguishes between the trimming of filled and partly filled compartments
  • describes the use of and fitting of shifting boards
  • describes how saucers or bundles of bulk grain are arranged in the square of a hatch to reduce heeling moments resulting from a shift of grain
  • describes how the surface of a partly filled compartment is secured against movement
  • describes how to separate two different bulk grain cargoes loaded into the same compartment
  • explains the inspection function of USDA, FGIS and NCB
  • describes appropriate logbook entries for the carriage of bulk cargoes, documentation and damage reports

21B1
21B1.01
21C2
61D3

TOPIC - Precautions before entering enclosed or contaminated spaces

  • lists potentially dangerous spaces, including:
    • cargo spaces
    • cargo, fuel and ballast tanks
    • pump-rooms
    • cofferdams
    • duct keels
  • states that enclosed spaces should be entered only with authorization and after appropriate safety checks have been carried out
  • states that an enclosed space may be lacking in oxygen or contain flammable or toxic gases
  • states that the master or responsible officer must ensure that a space is safe for entry by:
    • ensuring that the space has been thoroughly ventilated
    • testing at several levels for oxygen content and the presence of harmful vapor
    • requiring breathing apparatus to be worn when there is any doubt about the adequacy of ventilation or testing
  • states that the oxygen content should be 21% by volume before entry is permitted
  • states that the concentration of harmful vapor should be below its threshold limit value (TLV)
  • explains that a space where the atmosphere is known to be unsafe should be entered only in an emergency, after safety checks have been carried out, and wearing breathing apparatus
  • describes a permit-to-enter system using safety checklists to be followed by the responsible officer and the person(s) entering the space
  • lists the items appearing on the checklists
  • describes the protective clothing and equipment which should be used by or be available to those entering the space
  • states that mechanical ventilation should be maintained throughout the time persons are in an enclosed space
  • explains why periodical tests of the atmosphere should be made by persons working in an enclosed space
  • states that all safety checks should be repeated before re-entering a space after a break
  • describes appropriate documentation and logbook entries for tank entry

21B1
21C2
61D3
61D3.1
61D3.2

TOPIC - Cargo calculations and cargo plans

  • distinguishes between bale capacity and grain capacity and the use of the ship's capacity plan
  • defines:
    • long ton, short ton metric ton
    • measurement cargo
    • deadweight cargo
    • stowage factor
    • broken stowage
    • free space
    • full and down
  • explains "broken stowage" and states how an allowance for it is made
  • given the capacity of a hold and the stowage factor of the cargo, calculates the weight that the hold will contain
  • given the weights and stowage factors of one or more cargoes, calculates the space required
  • calculates the number of packages of given dimensions which can be loaded in a stated space, making allowance for broken stowage
  • given the maximum permissible loading of a 'tween-deck, calculates the maximum height to which cargo of stated stowage factor can be loaded
  • given the maximum permissible loading and height of a 'tween-deck, and the stowage factors of two commodities, calculates the depth of each required to fill the space at the maximum permitted deck loading
  • defines "ullage"
  • uses tank calibration tables and given cargo density to calculate the weight in a tank
  • corrects densities for temperature
  • uses tank calibration tables and given weights and densities of cargo to determine the ullages required
  • determines the ullage to leave to produce a given minimum ullage after allowing for expansion of cargo
  • extracts information from cargo plans of general cargo or container ships
  • draws up a cargo plan from given information
  • uses a hold capacity plan to estimate the depth of cargo in a hold or the area of 'tween-deck required for a given cargo
  • uses a capacity plan to estimate the quantity of cargo which can be loaded in part of a 'tween-deck
  • Computes dry cargo operations computations for:
    • stowage factor
    • broken stowage
    • area and volume
    • board feet
    • full and down

21B1
21C2
61D3

TOPIC - Draft, stability and trim calculations

  • defines deadweight tonnage, light ship displacement and displacement tonnage
  • uses a ship's hydrostatic particulars and given mean drafts to determine the approximate weight loaded or discharged. Explains draft marks and reading the draft.
  • uses a deadweight scale to determine the change in mean draft resulting from loading or discharging a given tonnage. Defines list, trim, even keel, down by the head or stern, hogging and sagging.
  • given the present drafts and the density of dock water, calculates the drafts in sea water
  • given the present draft amidships and dock-water density, calculates the amount to load to bring the ship to the appropriate load line in sea water
  • uses hydrostatic data to find the position of the center of flotation, MTI and TPI for a given draft
  • calculates the change of trim resulting from loading or discharging a given weight at a specified position
  • given the initial drafts, forward and aft, calculates the new drafts after loading or discharging a given quantity of cargo
  • uses a trimming table or curves to determine changes in drafts resulting from loading, discharging or moving weights
  • calculates final drafts and trim for a planned loading by considering changes to a similar previous loading
  • calculates, by using moments about the keel, the position of G for a given disposition of cargo, fuel and water
  • uses hydrostatic data to find the KM and thence the GM
  • states that, for a cargo ship, the recommended initial GM should not normally be less than 0.15 meters
  • uses KM curves to construct a curve of statical stability and from it reads the maximum righting lever and angle at which it occurs
  • calculates the arrival GM from the departure conditions and the consumption of fuel and water
  • plans the use of fuel and water to keep free surface effects to a minimum
  • estimates the loss of GM resulting from absorption of water by deck cargo
  • describes appropriate logbook entries for the stability and trim information

21B1
21C2
61D3