The swap body tank container is the intra-EU equivalent of the ISO tank, optimised for road, rail, and short-sea ferry intermodal traffic across the European inland network. Frame length 23 to 25 ft (7.01 to 7.62 m), 2,550 mm width (exceeds the 2,438 mm ISO 668 standard), retractable support legs that allow the swap body to stand on its own at distribution depots. Capacity 28,000 to 37,000 L (substantially larger than the 24,000 L typical of an ISO 1CC frame). MGW up to 38,000 kg under EU road weight rules. Critical limitation: swap bodies cannot be lifted between deep-sea container slots and are not a substitute for an ISO 1AA tank on China-Australia ocean lanes.
What swap body is built for
Intra-EU bulk-liquid logistics on multimodal routes that combine road tractors, rail wagons, and short-sea Mediterranean or North Sea ferry crossings. Bitumen at 30,000 L (UN 3257 in larger fleets where the volume per delivery economics work). Bulk food at 35,000 L for European food-distribution networks. Industrial chemicals on European lanes (Germany-Italy, France-Spain, Netherlands-Sweden, etc.) where the 38-tonne MGW lets a single swap body carry meaningful tonnage without splitting cargo. Operators: Bertschi, Hoyer, VTG Tanktainer, Den Hartogh, Tankcon, MC Containers all run substantial swap-body fleets.
Construction and materials
316L stainless cylinder, 6 mm reference shell, with retractable support legs at the four corners that allow the swap body to be parked on its own at depots without a chassis underneath. Top and bottom fittings as for ISO tanks. Optional glycol heating, baffles, GOVR placards, hazardous-cargo certifications. The 2,550 mm width exceeds ISO 668 (2,438 mm), which is why deep-sea slots cannot accept the equipment: the corner-cast spacing is wider than the deep-sea twist-locks accommodate.
The MGW of 38,000 kg vs the ISO standard of 36,000 kg reflects EU road weight rules, which permit higher gross weights on dedicated heavy-vehicle routes. The 2-tonne payload advantage over an ISO 1CC tank is real on intra-EU routes; it is irrelevant on deep-sea routes because the equipment cannot ride a container vessel anyway.
When swap body is the right choice
Swap body is the right tank for any intra-EU bulk-liquid route. The cost / capacity / payload combination beats an ISO 1CC tank for the European inland network. Bertschi and Hoyer both run the swap body as their default European fleet equipment for the volume-cargo lanes.
When swap body is the wrong choice
Swap body is absolutely the wrong tank for any deep-sea ocean route. China to Australia, China to Houston, China to Europe, Brazil to Asia: all require ISO 1CC or 1AA frames with deep-sea-compatible corner-cast spacing. A swap body cannot substitute. This is the single most common booking mistake by buyers unfamiliar with the EU intermodal context: an operator quoting “swap body T11 at 32,000 L” sounds like a larger ISO tank but isn’t a deep-sea-capable equipment class. The Sourzi calculator surfaces this with a hard warning when a swap-body code is selected.
How a swap body booking is verified
Pre-loading inspection covers the EU inland-route plate stack: ADR plate, RID plate where rail is in the route, EN 12972 / EN 14025 testing certificates, PED 2014/68/EU compliance for pressure-rated builds. CSC plate is not required for intra-EU traffic and is typically absent on swap body builds. The booking should explicitly confirm intra-EU routing; any deep-sea component invalidates the equipment choice.