---
title: "Transtainer"
description: "A transtainer is a large gantry crane used to load and unload containers onto trucks or railway wagons, or to stack containers on top of each other in a container yard."
language: en
canonical: https://www.flex.thisisbrew.com/glossary/transtainer/
lifecycle: live
dateModified: 2026-08-20T06:44:14Z
topics:
  - "Port Congestion"
  - "Ocean Freight"
---

# Transtainer

A transtainer is a large gantry crane used to load and unload containers onto trucks or railway wagons, or to stack containers on top of each other in a container yard.

## What Is a Transtainer?

A transtainer is a large gantry crane used to load and unload containers onto trucks or railway wagons or to store the [containers](https://www.flex.thisisbrew.com/glossary/container/) on top of each other in stacks in a [container yard](https://www.flex.thisisbrew.com/glossary/container-yard/).

Gantry cranes consist of parallel frame bars with cross-bars that hold the crane mechanism over the container stacks. Transtainers may be used on rails or pneumatic tires. When on rails, the transtainer can only operate directly above the rails. On tires, it has a broader field of movement and may be called an RTG, which is short for rubber-tyred gantry crane.

Back to the [full glossary](https://www.flex.thisisbrew.com/glossary/).

---

*This is a markdown version of [https://www.flex.thisisbrew.com/glossary/transtainer/](https://www.flex.thisisbrew.com/glossary/transtainer/) for AI/LLM consumption.*