Sea cargo reference
40' Open Top
The same open roof, at forty feet. The figures below are the inside of the box, the door, and the weights.
- Internal length
- 12.029 m
- Internal width
- 2.342 m
- Internal height
- 2.326 m
- Door opening, width
- 2.341 m
- Door opening, height
- 2.274 m
- Cubic capacity
- 65 m³
- Empty weight
- 3810 kg
- Payload
- 26670 kg
How a 40' Open Top is used
The forty-foot open top: the same removable roof bows and tarpaulin, over a full-length steel frame.
The extra length suits long items that have to be craned in rather than driven in, such as pipe, structural profiles and sections of plant. The door header at one end can normally come off too, so cargo can be fed in lengthways where crane access is awkward.
As with the 20', cargo above the roof line travels as over-height. That limits where the unit can be stowed, draws a surcharge, and needs a lashing plan agreed before loading.
Cargo it suits
How the box is made
- The same steel frame and corrugated side walls as a dry box, with no fixed roof.
- Removable roof bows span the width and carry a tarpaulin, roped down through eyelets along the top rails.
- A door header at one end can usually be swung aside or lifted out, so long cargo can also be fed in lengthways.
- Corner castings and internal lashing points match a closed container.
- Side walls are corrugated steel and the floor is wood.
- The roof is removable bows under a tarpaulin, and the door header swings clear, so cargo can be lowered from above or worked through the door by crane or grab.
- The roof bows also carry structure, not only the tarpaulin, so a flatrack remains the better choice for cargo that is genuinely over-height.
- Lashing rings rated to 1,000 kg sit in the upper and lower side rails and in the corner posts.
Why shippers choose it
- A crane can lower cargo in from above when it is too heavy or too awkward to come through the doors.
- Cargo that stands above the roof line can still travel, once it is declared as over-height and secured.
- Footprint, stacking and handling match a standard box, so it moves on ordinary equipment.
Check these before you book
- A tarpaulin resists rain. It is not a steel roof, and it is not a sealed or secure closure.
- Over-height cargo limits where the unit can be stowed on board, and it normally draws a surcharge.