According to the source, the figures refer to the "average gross tonnage of the vessels that have called in the country’s ports during the year. For the calculation of this average, each ship is counted as often as it has called in the country’s ports."
In 2021, the average size for roll-on/ roll-off ships in Vietnam was around ** thousand gross tons, the largest among all vessel types. Overall, the average size of all ships reached ** thousand gross tons in Vietnam in that year.
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UNCTAD. (October 20, 2022). Average size of vessels in Vietnam in 2021, by type (in gross tonnage) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/1046109/vietnam-average-size-of-vessels-by-type/
UNCTAD. "Average size of vessels in Vietnam in 2021, by type (in gross tonnage)." Chart. October 20, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/1046109/vietnam-average-size-of-vessels-by-type/
UNCTAD. (2022). Average size of vessels in Vietnam in 2021, by type (in gross tonnage). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/1046109/vietnam-average-size-of-vessels-by-type/
UNCTAD. "Average Size of Vessels in Vietnam in 2021, by Type (in Gross Tonnage)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 20 Oct 2022, /statistics/1046109/vietnam-average-size-of-vessels-by-type/
UNCTAD, Average size of vessels in Vietnam in 2021, by type (in gross tonnage) ÌÇÐÄÆƽâ°æ, /statistics/1046109/vietnam-average-size-of-vessels-by-type/ (last visited July 26, 2026)
Average size of vessels in Vietnam in 2021, by type (in gross tonnage) [Graph], UNCTAD, October 20, 2022. [Online]. Available: /statistics/1046109/vietnam-average-size-of-vessels-by-type/
