Over Dimensional Cargo Packing

Direct answer

ODC packing is seaworthy protection without a closed container shell. Weather, restraint and corrosion design must carry more of the load.

What is over dimensional cargo packing?

Over dimensional cargo packing (ODC packing / OOG cargo packaging) prepares cargo too large or heavy for a standard closed container. It combines load-rated skids, CG and lift control, weather shrouds, VCI and desiccant on sealed zones, and CTU-aware lashing for flat-rack, open-top, break-bulk or RoRo. It is a form of seaworthy packaging, not a substitute for it.

Systems map: seaworthy packaging system. Machine baseline when a unit still fits a case: how to pack a machine for export.

ODC PackingOOG Cargo PackagingFlat Rack PackagingBreak Bulk PackingProject CargoOpen Top Container

On this page

ODC, OOG and project cargo: what the terms mean in packing practice

Trade language is inconsistent across regions. For packing specifications, use the operational definitions below so mode selection, structure and weather exposure are unambiguous.

Term	Operational meaning for packing	Packing consequence
ODC (over dimensional cargo)	Cargo whose length, width, height or combination exceeds practical limits of a standard closed container or normal road envelope for the planned move.	Cannot rely on a six-sided steel box as weather shell; packing must own weather, spray and lift geometry.
OOG (out of gauge)	Carrier and terminal language for cargo that protrudes beyond the standard container frame on a flat-rack or similar unit, or exceeds gauge for standard stowage.	Extra handling fees and special stowage; packing must protect protruding faces and support multipoint lifts.
Project cargo	Capital equipment and modular plant shipped as a programme (often multi-case, multi-mode) rather than routine FCL boxes.	Packing instructions, serials, lift plans and corrosion duration must align across the set.
Break-bulk	Cargo loaded as individual pieces onto a multipurpose or heavy-lift vessel rather than inside a closed container.	Highest weather and crane exposure; skid and cover design dominate.
RoRo (where relevant)	Wheeled or skidded units driven or rolled onto a vessel; sometimes used for industrial modules on trailers.	Securing geometry changes; weather exposure during ramp and deck periods still needs covers and metal protection.

Size alone does not define the pack. A unit that is only slightly over height may still use an open-top container with a relatively normal internal barrier stack. A unit that is short but extremely heavy may need a flat-rack or break-bulk plan for floor loading and crane capacity even when its envelope looks modest. Always couple dimensions, mass, centre of gravity and route climate in the first survey.

This page is technical authority content from a global export packaging and protective-packaging company that engineers structural packs and manufactures VCI and desiccant materials. It is method guidance, not a guarantee that any single cover or film replaces disciplined process and correct vessel operations.

Engineering principle

Why ODC packing differs from closed FCL machine packing

Standard machine export packing for full container load (FCL) assumes a steel container shell that limits rain, reduces UV and supports conventional case stacking. Over dimensional cargo packaging export work loses that assumption. Four design drivers change immediately.

1. No full container shell

Rain, spray, sun and wind act on the cargo and its covers. Tarpaulins and shrink shrouds are weather layers, not hermetic barriers. Critical faces and sealed sub-volumes still need real barrier and desiccant design where geometry allows.

2. Weather and salt exposure

Deck, quay and coastal storage expose bright metal to chlorides. VCI chemistry and face protection matter more, not less, because open air renews corrosive agents that a sealed FCL package would have limited.

3. Restraint on the cargo structure

Lashing often bears on skids, frames or OEM lift eyes rather than on a closed timber case. Load paths must be continuous into engineered members. Soft cladding cannot be a lashing point.

4. Lift and multipoint handling

ODC typically sees more crane cycles, trailer transfers and yard moves. Centre of gravity marks, certified lift points and base stiffness decide whether the unit survives the first protected lift.

Layer thinking still applies: prepare cargo, protect metal, control moisture in any sealed free volume, carry structural loads, restrain movement, document. The intensity of weather cladding and lashing increases; the obligation to dry metal and immobilise kinematics does not disappear. Full stack: seaworthy packaging system.

Mode selection

FCL vs flat-rack vs open-top vs break-bulk: packing comparison

Choose mode from cargo envelope, mass, handling assets and commercial schedule, then design packing to that mode. Do not reverse the order by buying timber first.

Factor	Closed FCL	Flat-rack packaging	Open-top container packing	Break-bulk packing
When it fits	Within standard container L/W/H and door aperture; mass within floor and handling limits	Over-width, over-length or heavy units that need open sides and platform lashing	Over-height units that still fit length and width of a container footprint	Pieces that exceed practical unitisation, or project programmes using multipurpose / heavy-lift vessels
Weather shell	Steel box (still not hermetic; container rain risk remains)	None; cargo and covers take weather	Side walls help; open roof needs tarp or hard cover	None on deck; hold stowage varies by vessel
Primary packing focus	Closed case + VCI + barrier + desiccant + CTU stowage	Skid/frame, OOG face protection, heavy lashing plan, weather shroud	Top weather, internal bracing, barrier stack for metal, safe top packing	Skid engineering, lift plan, weather cladding, corrosion for long exposure
Corrosion climate	Sealed package climate controllable; container desiccant for box air	Open exposure; sealed sub-volumes and VCI wraps critical	Partial enclosure; still plan barrier for sensitive metal	Highest open exposure risk on deck legs
Restraint concept	Case to container floor and walls per CTU practice	Cargo/skid to flat-rack with chains, rods, stoppers; OOG clearances	Cargo to floor and sides; prevent top crush under tarp loads where relevant	Vessel lashing plan; pack must present clean lash faces and CG data
Typical cargo examples	CNC machines, mid-size presses, packaged skids	Transformers, large frames, modules, over-width tanks	Tall tanks, vertical vessels, machines with high CG	Turbine sections, modular plant, project cargo lots
ISPM-15 wood	Cases, pallets, dunnage as applicable	Skids, braces, cribbing still regulated solid wood	Same as FCL for timber dunnage and cases	Skids, saddles, dunnage fully in scope

RoRo can substitute for some wheeled or trailered modules when port and vessel options allow. Packing still owns corrosion, covers and securing interfaces; it does not disappear because wheels exist.

Flat-rack packaging

Flat rack packaging for OOG and heavy industrial pieces

Flat-rack packaging places cargo on an open platform container with collapsible or fixed ends. It is the default ocean unit for many OOG modules, large transformers, long fabrications and over-width plant. Packing success depends on base engineering, lashing geometry and weather cladding, not on a closed timber box alone.

Design checklist for flat-rack packs

Base match: Skid footprint and beam spacing compatible with flat-rack floor and lashing points.

OOG map: Document every protrusion beyond the rack frame; protect those faces first.

Load path: Chains and rods land on structural skid members or certified eyes, never on cladding.

Stoppers and chocks: Prevent sliding under pitch and roll; design for dynamic factors, not static weight only.

Weather shroud: UV-stable covers, sealed seams where practical, drainage so water does not pool on critical faces.

Access for lashers: Leave clear paths so stevedores can apply and inspect lashings without cutting covers.

Marks: Gross weight, CG, lift points, "do not walk" zones, and OOG outline labels.

Photo record: Dry metal stages, desiccant placement in sealed zones, and final lash-ready condition.

When a unit is still small enough for a closed timber case on the rack, use the same moisture and corrosion stack as FCL packing, then treat the case as cargo to be lashed. When the unit is too large for a full case, use skid-and-frame geometry with modular covers. Structure decision context: wooden crate vs box for export Â· manufacture: export wooden box and crate manufacturer.

Open-top mode

Open top container packing for tall ODC units

Open-top container packing is used when cargo height exceeds a standard dry van but the footprint still suits a container floor. Cargo is loaded from above (crane) or sometimes through doors if geometry allows, then covered with a carrier tarp or hard roof system. Packing teams often underestimate top weather and the risk of cover abrasion on sharp machine edges.

Height and CG discipline

Tall units raise tip risk in road and yard moves. Lower the shipping CG where OEM procedures allow (remove tall accessories into separate cases). Mark CG clearly for every transfer.

Top protection vs barrier stack

Carrier tarps shed rain but are not aluminium barrier film. Sensitive metal still needs sealed barrier volumes with sized desiccant. Soft edge guards stop tarp chafe that tears outer wraps mid-voyage.

Internal bracing

Brace to container walls and floor with ISPM-15 dunnage where required. Prevent the unit from walking under vibration. Do not use fragile cladding as a brace face.

Door-end and floor moisture

Open-tops still create a container climate. Day-night condensation remains real. Plan container-level desiccant when metal and hygroscopic materials share the free air. See container rain.

If the unit barely exceeds height, compare the total cost and risk of open-top versus partial disassembly into FCL cases. Partial strip-down with proper labelling often reduces weather risk more than a marginal open-top plan. On-site strip and pack: on-site packing and crating.

Break-bulk and project programmes

Break bulk packing for machinery and modular plant

Break bulk packing machinery programmes ship individual heavy pieces as cargo lots on multipurpose or heavy-lift vessels. There is no standard container climate. Quay dwell, deck spray and multipoint crane operations define the environment. Project cargo packing for energy, process plant and infrastructure builds often uses this mode for turbines, generators, large presses, columns and modular plant blocks.

What a break-bulk packing instruction must own

Instruction element	Why it is non-negotiable
Piece list and serial map	Multi-case sets fail at destination when labels and packing lists diverge from physical pieces.
Lift plan inputs	Weight, CG, certified lift points, sling angles and forbidden lift locations protect the asset and the crew.
Skid / saddle design	Vessel and trailer beds need continuous load distribution; point loads crush floors and warp bases.
Weather class	Deck vs under-deck stowage changes cover grade, UV demand and salt exposure assumptions.
Corrosion duration	Voyage plus yard storage at both ends; open exposure shortens safe metal dwell without VCI and sealed zones.
Lash face map	Tell the vessel team where chains may land; protect instrumentation and soft skins elsewhere.
Unpack and preservation reverse steps	Receiving plants need lock positions, desiccant locations and cover removal order.

Service execution for complex programmes: export packing services Â· heavy class hub: heavy machinery packaging.

Weather layers

Weatherproofing ODC: shrouds, barrier wrap and critical-face protection

Weatherproofing for over dimensional cargo is layered. Outer covers manage rain, UV and spray. Inner systems manage humidity and corrosion chemistry. Confusing the two is a common project-cargo failure.

Outer weather shrouds

Heavy-duty tarpaulins, industrial shrink wraps or engineered fabric covers shed water and reduce UV. Seam them for wind; provide drainage paths; reinforce edges against chafe. Outer covers are not sealed moisture barriers.

Barrier wrap where geometry allows

Control cabinets, bearing housings, machined ways and bright metal sub-assemblies can often receive aluminium or high-barrier poly envelopes with industrial desiccant inside. Product: moisture barrier bags.

Critical-face protection

Flange faces, shaft ends, optical surfaces, bushings and paint-critical panels need hard or soft face guards so lashings and covers never bear on them. Mark "no step / no lash" zones.

Open cavities and nozzles

Blind flanges, breathers and desiccant loads inside vessels reduce internal corrosion. Coordinate with OEM preservation procedures for tanks, boilers and process equipment.

Never trap free water under a shrink shroud against bare steel. Dry metal first, apply corrosion protection, then close covers. Wet packing under plastic accelerates flash rust and staining.

Structure and restraint

Skid engineering, centre of gravity, lift points and CTU lashing concepts

For ODC, the skid is often the primary structural package. It must distribute mass, survive multipoint lifts and present clean interfaces for vessel or flat-rack lashing. Cosmetic timber that only "looks industrial" is not a design.

Design topic	What good practice requires
Skid members and grade	Section size and timber or steel grade matched to shipping mass, dynamic factors and support span. Avoid long unsupported spans under heavy beds.
Machine to skid load path	Bolt through OEM structural feet or engineered adapter plates. Do not hang multi-tonne mass on sheet-metal skirts.
Centre of gravity (CG)	Estimate or measure CG; stencil on all four sides and top if visible. CG errors cause tip events during crane and trailer moves.
Lift points	Use certified OEM eyes or engineered lift frames. Define sling angles. Prohibit improvised lifts from covers or pipework.
CTU Code concepts	Even when cargo is not inside a closed CTU, the same physics apply: prevent sliding, tipping and racking under accelerations; secure with suitable devices; keep lashings inspectable. For containerised OOG on flat-racks and open-tops, follow CTU-aware stowage and securing practice for the unit as a whole.
Chocks, stoppers, friction	Combine friction mats, timber chocks and positive stoppers so cargo cannot walk. Wet steel-on-steel friction is unreliable at sea.
Dunnage and cribbing	Use dry, load-rated members. Soft wood crushed under point loads becomes a loose hazard mid-voyage.

Standards and audit language for packing programmes: export packing standards checklist. ISPM-15 rules for solid wood members: ISPM-15 export packaging guide.

Metal protection

Corrosion control for oversized cargo packaging export: VCI and desiccant still apply

Open exposure makes corrosion harder, not optional. Salt spray, coastal humidity and temperature cycling attack bright metal on transformers, turbine sections, press frames and modular plant faster than the climate inside a well-managed FCL barrier bag. The chemistry tools remain the same; the sealing strategy becomes more selective.

VCI on critical metal

Multimetal VCI film and VCI paper protect contact faces and shared sealed air. Emitters support large cabinets. Prefer oil-free VCI programmes when destination plants ban greasy receipt. How the chemistry works: how VCI works.

Desiccant inside sealed volumes

Wherever a barrier envelope can be closed, place industrial desiccant sized to free volume and climate (DIN 55473-oriented Desiccant Unit thinking). Products: industrial desiccants. Open-top and FCL hybrids may still need container desiccant.

What open air does not allow

You cannot dry the entire ocean atmosphere with desiccant bags hanging outside a barrier. Desiccant only works inside a defined sealed free volume. Outer shrouds alone do not create that volume.

Duration honesty

Design for voyage weeks plus quay storage at origin and destination. Project cargo often sits longer than the sailing schedule. Mothball intensity may apply: machinery preservation and mothballing.

Desiccant and VCI solve different problems and often work together: desiccant vs VCI. Container condensation physics for any remaining closed free air: container rain.

Phytosanitary compliance

ISPM-15 still applies to ODC skids, braces and dunnage

Over dimensional cargo does not exempt solid wood packaging material from international phytosanitary rules. Skids, cribbing, braces, chocks and timber saddles that are solid wood packaging material in international trade must be treated and marked under ISPM-15 requirements of the countries involved. Steel skids avoid the wood rule for those members but do not remove the need for corrosion protection, weather covers or compliant timber if any wood dunnage remains in the pack.

Common project-cargo mistakes: unmarked temporary cribbing left under a finished unit; mixed treated and untreated wood in the same skid; marks painted over during weatherproofing. Inspect marks after final cladding. Keep certificates available for the shipping file when buyers or authorities require them.

Cargo classes

ODC cargo types: turbines, transformers, presses, tanks and modular plant

Class-specific pages capture OEM-sensitive details. Use this matrix as the ODC overlay on those verticals.

Cargo type	Typical mode pattern	Packing emphasis	Vertical page
Power transformers	Flat-rack or break-bulk; open-top when height dominates	Massive skid, bushing and radiator protection, weather covers, sealed control cabinets, oil-system rules per OEM	Transformer packaging
Turbine sections and related equipment	Break-bulk / heavy-lift; sometimes flat-rack for sub-assemblies	Rotor support, blade and journal protection, barrier sealed zones, strict lift geometry	Turbine packaging
Industrial presses and large beds	Flat-rack or multi-case FCL if strip-down is possible	Ram immobilisation, heavy skid, CG marks, critical face guards	Press machine packaging
Tanks, vessels and boiler-related equipment	Open-top, flat-rack or break-bulk by diameter and length	Saddles, nozzle blinds, internal dryness or blanketing per procedure, flange-face protection	Boiler packaging
Modular plant and process skids	Mixed: FCL accessories + ODC main modules	Programme packing lists, interface protection, weather class per module, corrosion duration across storage	Heavy machinery packaging
General heavy machinery	Mode by envelope survey	Immobilise, skid, VCI, barrier where possible, ISPM-15 structure	Heavy machinery packaging

If the machine can still be packed as a closed case after limited strip-down, prefer that path for corrosion control and then unitise remaining ODC pieces separately. Procedure: how to pack a machine for export.

Voyage intensity

Route intensity examples for project cargo (not city pages)

Port names below appear only as illustrations of route intensity and logistics patterns. They are not location landing pages and do not change the engineering definition of a correct ODC pack.

Lane family (examples)	Why intensity rises	Packing emphasis
Energy projects in the Gulf (for example Dammam or Dubai as hub patterns)	Heat, UV, coastal salt and long quay storage before site delivery	UV-stable covers, generous corrosion duration, sealed cabinets, avoid wet packing in humid heat
US Gulf project cargo (for example Houston as a heavy-lift / energy logistics pattern)	Mixed rail/road interfaces, multipoint yard handling, hurricane-season storage risk windows	Robust skids, clear CG and lift marks, weather readiness for open storage, documented lash faces
European heavy-lift ports (for example Rotterdam or Hamburg patterns)	High handling professionalism but complex multimodal last miles and cold-weather condensation on metal	Dry-metal discipline before seal, edge protection for winter handling, accurate piece lists for multipiece lots
Asian project cargo hubs (for example Singapore, Shanghai or Busan patterns)	High humidity legs, dense terminal handling, long feeder or deep-sea combinations	Sealed barrier sub-volumes with sized desiccant, VCI on bright metal, chafe-resistant outer covers

Always write weeks sealed, expected stowage (deck vs under-deck / open-top / flat-rack) and contingency yard storage into the RFQ. Those three inputs change cover grade and desiccant count more often than cargo name alone.

Claims prevention

Failure modes in ODC packing (and how to prevent them)

Failure mode	Typical cause	Prevention
Flash rust under shrink wrap	Wet metal or trapped condensation closed under plastic	Dry first; VCI; seal only dry surfaces; ventilate wet processes
Cover shred and water ingress	UV, wind, sharp edges, poor seams	Edge guards, reinforced covers, correct fastening, mid-voyage inspection plan if long storage
Skid failure or base racking	Undersized members, wrong span, point loads	Engineer skid to mass and dynamic factors; continuous load path
Tip or sling damage	Unknown CG, improvised lift points	CG marks, certified eyes, written lift plan
Lashing damage to instruments	Chains on soft skins or sensors	Lash-face map; hard points only; sacrificial timber as designed
Corrosion of sealed cabinets	No VCI/desiccant inside free volume; long humid dwell	Barrier + desiccant + VCI emitters for cabinets
ISPM-15 rejection	Untreated solid wood dunnage or missing marks	Treat and mark all regulated solid wood; inspect after cladding
Lost piece identity	Multi-case project without serial control	Piece list, weatherproof labels, photo archive
Assumed FCL rules on open cargo	Using only a closed-case mental model	Mode-specific weather and lashing design from survey day one

Handoff quality

Lash-face map and what packing must hand to securing teams

ODC packing fails at the interface between packer and lasher when the unit arrives with no usable lash geometry. Design the pack so securing is possible without cutting weather covers or bearing on soft cladding.

Handoff item	What securing teams need
Clear lash faces	Hard members or designated lash points; no â€œno step / no lashâ€ zones used as restraint points
CG and mass data	Finished shipping mass and centre of gravity for tip and lash design
Lift history	Approved lift points already proven at pack, not invented on the quayside
Weather cover design	Covers that can be opened for inspection or lash without destroying the climate method
Critical face guards	Flanges, shafts and paint faces protected so straps never land on them
Document pack	Packing list, piece map for multi-unit projects, photo set of base and covers as released

Packing and vessel/flat-rack securing may be different contracts. Write scope clearly: who owns weather cladding, who owns final lashing, who owns CTU paperwork. Structure without a clean securing interface is incomplete ODC design.

Buyer tool

ODC packing RFQ checklist

Send the following data when requesting an over dimensional cargo packing specification. Incomplete RFQs produce incomplete packs.

Outline dimensions and shipping mass (as shipped, not catalogue dry mass only).

Centre of gravity estimate and known tip risks.

Certified lift points and forbidden lift locations from OEM drawings.

Mode preference (flat-rack, open-top, break-bulk, RoRo, or open for recommendation).

Deck vs under-deck / storage expectations if known.

Route weeks and climate intensity (humid tropical, coastal salt, cold condensation).

Metal inventory (ferrous, multimetal, bright faces, oil-free receipt rules).

Critical faces (flanges, shafts, bushings, painted cosmetics, sensors).

Access for packing (bay vs on-site packing).

Strip-down allowance (what may leave the main piece for FCL cases).

Project piece list for multi-unit programmes and serial control.

Destination unpack constraints (clean room, no oil, crane limits).

Field sequence

Practical sequence for packing ODC machinery for export

1 Survey envelope, mass, CG, mode and route

Decide flat-rack, open-top, break-bulk or hybrid before materials are cut. Capture lift points and OOG map.

2 Clean, dry and immobilise

Remove free fluids and condensation. Lock moving elements. Record reverse steps for destination.

3 Apply corrosion protection on critical metal

VCI film, paper and emitters on bright surfaces and cabinets. Oil only where process demands wet film.

4 Seal barrier sub-volumes with sized desiccant

Close what can be closed. Do not pretend outer shrouds are hermetic barriers.

5 Build skid, frame, saddles and face guards

Engineer load path and ISPM-15 solid wood where used. Protect flanges and soft skins.

6 Apply weather shroud and edge reinforcement

Drainage, chafe protection, access for lashers. Photograph finished weather class.

7 Mark, document and release for lashing

Weight, CG, lift points, OOG outline, packing list, timber evidence, method notes. Hand over a lash-face map.

Product and knowledge bridges

Materials and related guides used in ODC systems

VCI film Â· VCI paper Â· VCI emitters

Moisture barrier bags Â· Industrial desiccants Â· Container desiccant

Export wooden box and crate manufacturer Â· Wooden crate vs box

ISPM-15 guide Â· Heavy machinery packaging

On-site packing and crating Â· Export packing services

What is seaworthy packing Â· Seaworthy packaging system Â· How to pack a machine for export

FAQs

Over dimensional cargo packing: frequently asked questions

What is over dimensional cargo packing?

Over dimensional cargo packing is the engineered protection of cargo too large or heavy for a standard closed container. It covers structural skids or frames, weatherproofing, corrosion control, lift and CG management, and mode-specific restraint for flat-rack, open-top, break-bulk or RoRo shipments.

What is the difference between ODC and OOG?

ODC (over dimensional cargo) is a general logistics term for cargo outside normal dimensional envelopes. OOG (out of gauge) is commonly used in container shipping when cargo on a flat-rack or similar unit exceeds the standard gauge or protrudes beyond the frame. Both require open-mode packing design rather than closed-box assumptions.

Is flat-rack packaging the same as break-bulk packing?

No. Flat-rack packaging unitises cargo on an open platform container with container-line handling and lashing patterns. Break-bulk packing treats pieces as individual vessel cargo, often with different lift plans, stowage and weather exposure. Skid engineering and corrosion control apply to both, but the securing interface differs.

Do I still need VCI if the cargo is open to weather?

Yes for critical bright metal. Open weather increases chloride and humidity attack. Use VCI wraps and emitters on metal that can share a sealed or semi-sealed microclimate, and protect faces that cannot be fully sealed with coatings or guards per OEM rules.

Does desiccant work under a tarpaulin alone?

Not effectively for the whole unit. Desiccant needs a defined sealed free volume. Place industrial desiccant inside barrier bags or closed cabinets. Outer tarpaulins manage rain and spray; they do not create a controlled dry package climate by themselves.

Does ISPM-15 apply to ODC skids and cribbing?

Yes when solid wood packaging material is used in international trade. Skids, braces, chocks and timber dunnage must be treated and marked under ISPM-15 rules applicable to the route. Steel members avoid wood treatment for those parts but do not remove other packing duties.

When should I choose open-top container packing instead of a flat-rack?

Choose open-top when over-height is the main problem and the length/width still fit a container footprint, and when partial side protection helps. Choose flat-rack when over-width, over-length, heavy multipoint lashing or open-side access dominates. Survey mass and OOG map before deciding.

What information is required for an ODC packing RFQ?

Shipping dimensions and mass, CG and lift points, preferred mode, route weeks and climate, metal inventory, critical faces, packing access (bay or on-site), strip-down allowance, and for projects a full piece list with serials. Incomplete data produces incomplete weather and lashing design.

How is project cargo packing different from single-machine FCL packing?

Project cargo packing manages multi-piece programmes, mixed modes, longer storage and serial control across the lot. Single-machine FCL packing usually centres on one closed case with barrier and desiccant. Project programmes need coordinated packing instructions and consistent corrosion duration across all pieces.

Can ODC packing be done on site at the plant?

Yes. Large transformers, presses and modular plant often cannot move to a packing bay. On-site teams execute survey, corrosion protection, skid build, weather cladding and documentation on the factory floor or apron. See on-site packing and crating for site-control detail.

What is the most common ODC packing failure?

Treating weather covers as complete protection while leaving wet metal, unsealed cabinets and undersized skids. The next most common failures are unknown CG causing lift damage and untreated solid wood causing phytosanitary delays.

Does the CTU Code apply to flat-rack OOG cargo?

CTU Code principles for packing and securing cargo transport units inform how cargo should be stowed and secured on flat-racks and open-tops so the unit remains safe through the transport chain. Packing must present correct load paths, lash faces and mass data so stevedores can secure the unit properly.

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What is over dimensional cargo packing?

Contents

ODC, OOG and project cargo: what the terms mean in packing practice

Why ODC packing differs from closed FCL machine packing

1. No full container shell

2. Weather and salt exposure

3. Restraint on the cargo structure

4. Lift and multipoint handling

FCL vs flat-rack vs open-top vs break-bulk: packing comparison

Flat rack packaging for OOG and heavy industrial pieces

Design checklist for flat-rack packs

Open top container packing for tall ODC units

Height and CG discipline

Top protection vs barrier stack

Internal bracing

Door-end and floor moisture

Break bulk packing for machinery and modular plant

What a break-bulk packing instruction must own

Weatherproofing ODC: shrouds, barrier wrap and critical-face protection

Outer weather shrouds

Barrier wrap where geometry allows

Critical-face protection

Open cavities and nozzles

Skid engineering, centre of gravity, lift points and CTU lashing concepts

Corrosion control for oversized cargo packaging export: VCI and desiccant still apply

VCI on critical metal

Desiccant inside sealed volumes

What open air does not allow

Duration honesty

ISPM-15 still applies to ODC skids, braces and dunnage

ODC cargo types: turbines, transformers, presses, tanks and modular plant

Route intensity examples for project cargo (not city pages)

Failure modes in ODC packing (and how to prevent them)

Lash-face map and what packing must hand to securing teams

ODC packing RFQ checklist

Practical sequence for packing ODC machinery for export

1 Survey envelope, mass, CG, mode and route

2 Clean, dry and immobilise

3 Apply corrosion protection on critical metal

4 Seal barrier sub-volumes with sized desiccant

5 Build skid, frame, saddles and face guards

6 Apply weather shroud and edge reinforcement

7 Mark, document and release for lashing

Materials and related guides used in ODC systems

Over dimensional cargo packing: frequently asked questions

What is over dimensional cargo packing?

What is the difference between ODC and OOG?

Is flat-rack packaging the same as break-bulk packing?

Do I still need VCI if the cargo is open to weather?

Does desiccant work under a tarpaulin alone?

Does ISPM-15 apply to ODC skids and cribbing?

When should I choose open-top container packing instead of a flat-rack?

What information is required for an ODC packing RFQ?

How is project cargo packing different from single-machine FCL packing?

Can ODC packing be done on site at the plant?

What is the most common ODC packing failure?

Does the CTU Code apply to flat-rack OOG cargo?

Need an ODC packing specification for a real piece of cargo?