Short answer: To book a RoRo crossing, you need to measure your vehicle in Length, width and height – measured at the outermost point in each case and including all fittings such as roof racks, aerials or mirrors. As sea freight is calculated by volume, even a few centimetres can determine the loading category and, consequently, the price. Accurate measurements protect you from additional charges and surprises at the port.
The key points in 5 points
- The following is measured: Length × Width × Height, at the outermost point in each case.
- Superstructures count towards the total: Roof racks, aerials, mirrors, accessories.
- Sea freight charges are calculated as follows Volume – Height is often the most expensive factor.
- Exact figures avoid recalculations and reallocations.
- In the event of excess, the OOG planning (Out of gauge).
Why are vehicle dimensions so important?
Unlike many forms of land transport, sea transport is predominantly based on Volume calculated, not by weight. We explain how the volume (in cubic metres) is calculated and why it is crucial under Ro-Ro volume (cbm). In short: the larger the floor area of your vehicle, the more space it takes up on board.
How do you measure length, width and height correctly?
- Length: from the front edge to the rear edge (including bumpers, tow bar and spare wheel).
- Width: at the widest point – usually over the wing mirrors; only fold them in if you’re shipping the car with them folded in.
- Height: from the ground to the highest point – including roof racks, roof boxes, aerials or bodywork.
Measure on a level surface and round up rather than down. The IMO specifies that with the CTU code sets out the international framework for the correct registration and safeguarding of loading units.
What are the most common errors that occur when taking measurements?
- Forgotten superstructures: Roof racks or aerials are not included in the measurement – the vehicle is taller than stated.
- Please use the catalogue dimensions only: Manufacturer's specifications do not take retrofits into account.
- Misjudging a mirror: Whether it is shipped folded or unfolded affects the width.
- Ignore rounding up/down: Inaccurate readings lead to re-measurements at the terminal.
What details do you provide to the haulage company?
Report the exact measurements in centimetres (L × W × H) plus the weight and any special features (lowered suspension, add-on parts, not roadworthy). The more accurate your details, the more binding the quote – and the lower the risk of additional charges.
When is your vehicle considered to be oversized (OOG)?
If your vehicle exceeds the standard dimensions for standard loading, it is considered to be Out of Gauge (OOG) and needs to be planned separately. We’ll show you how to go about this properly at Oversized and Overheight: OOG vehicles on RoRo ferries.
FAQ
Do I need to fold the wing mirrors in before measuring the width?
Only if the vehicle is shipped with the wing mirrors folded in. Measure the vehicle as it is actually handed over, and let the haulage company know.
Does a roof rack count towards the height?
Yes. Anything that is permanently fitted – roof bars, roof boxes, aerials – counts towards the height and must be included in the measurement.
Why is altitude so important?
Because it determines the usable deck area and any possible surcharges. Even a few centimetres can change the loading category.
What happens if my measurements are incorrect?
Checks are carried out at the terminal. If the figures differ, you may face additional charges or, in extreme cases, a rebooking. Providing accurate details will protect you from this.
Is it charged by volume or by weight?
For RoRo, it is mainly based on volume. Weight is relevant for handling and securing the cargo, but rarely determines the price on its own.
All the information in this article has been carefully researched, but is subject to change at any time. ODS Orient accepts no liability for the timeliness, accuracy or completeness of the information provided. Please contact us directly for a no-obligation quote.