---
title: "Athwartships"
description: "At right angles to the centreline of the ship"
url: "https://oceancargo.co.uk/shipping-terms/athwartships"
date: "2026-06-25T10:19:18+00:00"
language: "en-GB"
---

![Ocean Cargo](https://oceancargo.co.uk/images/GenPics/OCs-Customs-Brokerage.webp)

 # ATHWARTSHIPS: Understanding Perpendicular Movement in Freight

## What Does ATHWARTSHIPS Mean in Shipping?

In the intricate world of global freight and maritime logistics, precise terminology is paramount. One such term, fundamental to understanding vessel operations and cargo placement, is **ATHWARTSHIPS**. This nautical term refers to a direction or position that is at right angles (90 degrees) to the centreline or keel of a ship. Essentially, it describes movement or orientation across the width of the vessel, from one side (port) to the other (starboard).

For businesses relying on efficient sea freight, comprehending terms like ATHWARTSHIPS is crucial for optimising cargo loading, ensuring stability, and understanding vessel design. At Ocean Cargo, we believe in demystifying these complexities, providing our clients with the knowledge and services needed for seamless international shipping.

Understanding the ATHWARTSHIPS concept is not merely academic; it has practical implications for everything from container stowage plans to the safe handling of oversized cargo. When a piece of equipment is described as being stowed ATHWARTSHIPS, it means it's positioned across the vessel's beam, rather than along its length (fore and aft).

## The Importance of ATHWARTSHIPS in Maritime Operations

The orientation of cargo and equipment on a vessel significantly impacts its stability, safety, and operational efficiency. The ATHWARTSHIPS dimension plays a critical role in several key areas:

- **Cargo Stowage:** Proper stowage is vital for preventing cargo shift during transit, which can lead to damage or even capsizing. Large or unusually shaped items, such as industrial machinery or project cargo, are often positioned ATHWARTSHIPS to distribute weight evenly or to fit within the vessel's dimensions. Ocean Cargo's [sea freight services](https://oceancargo.co.uk/services/sea-freight/) meticulously plan stowage to ensure maximum safety and compliance.
- **Vessel Stability:** The distribution of weight across the ship's beam directly affects its transverse stability. Naval architects and ship operators use ATHWARTSHIPS measurements to calculate metacentric height (GM), a key indicator of a vessel's initial stability.
- **Loading and Unloading:** Cranes and other lifting equipment often operate with ATHWARTSHIPS movements to position cargo into holds or onto decks. Understanding these movements is essential for efficient port operations and minimising turnaround times.
- **Ship Design:** The ATHWARTSHIPS dimension is fundamental to a ship's beam (width) and its overall structural integrity. Bulkheads, frames, and other structural components are often oriented or measured ATHWARTSHIPS to provide strength and compartmentalisation.
- **Navigation and Manoeuvring:** While less direct, understanding the ATHWARTSHIPS dimension helps in visualising a vessel's footprint and its interaction with waterways, especially in narrow channels or during docking procedures.

For businesses shipping to destinations like the [USA](https://oceancargo.co.uk/countries/usa/sea-freight-usa) or [Canada](https://oceancargo.co.uk/countries/canada/sea-freight-canada), understanding how cargo is handled and positioned on board is part of ensuring a smooth and secure journey. Ocean Cargo provides comprehensive logistics solutions, ensuring every detail, including cargo orientation, is expertly managed.

## Practical Applications of ATHWARTSHIPS in Freight Forwarding

While a nautical term, ATHWARTSHIPS has tangible implications for freight forwarders and their clients. Here's how it translates into practical considerations:

### Container Loading and Lashing

When loading containers onto a vessel, the orientation of the containers themselves is typically fore and aft. However, within the container, cargo might be stowed ATHWARTSHIPS to maximise space or secure odd-sized items. For example, if you're shipping [excavators and diggers to the UAE](https://oceancargo.co.uk/countries/uae/excavators-diggers-uae), components might be disassembled and stowed ATHWARTSHIPS within a flat rack or open-top container to fit the width.

### Project Cargo and Oversized Shipments

This is where ATHWARTSHIPS becomes particularly relevant. Large, indivisible items like [Industrial Machinery](https://oceancargo.co.uk/industries/manufacturing-industrial "Industrial Machinery"), wind turbine components, or large vehicles often exceed standard container dimensions. When these are loaded onto a vessel's deck or into specialised holds, their orientation (whether fore and aft or ATHWARTSHIPS) is a critical decision made by naval architects and cargo superintendents. Factors include:

- **Vessel Beam:** The item must fit within the ship's width.
- **Weight Distribution:** Positioning ATHWARTSHIPS can help distribute heavy loads more evenly across the vessel's structure.
- **Lashing Points:** The orientation affects how the cargo can be securely lashed to the ship.
- **Port Handling:** How the cargo will be lifted on and off the vessel at the origin and destination ports.

Ocean Cargo specialises in [project logistics for wind turbine components to Australia](https://oceancargo.co.uk/countries/australia/wind-turbine-components-blades-nacelles-tower-sections-australia), where precise planning of ATHWARTSHIPS and other cargo orientations is essential for safe and compliant transport.

### Roll-on/Roll-off (RoRo) Vessels

On RoRo vessels, where vehicles and wheeled cargo are driven directly onto the ship, the ATHWARTSHIPS dimension dictates how many lanes of vehicles can be accommodated side-by-side. Efficient use of this space is key to maximising cargo capacity.

### Customs and Documentation

While not directly related to the term itself, the physical dimensions and orientation of cargo (which ATHWARTSHIPS helps define) are crucial for customs declarations and compliance. Accurate measurements ensure correct tariffs and avoid delays. Ocean Cargo's [customs compliance services](https://oceancargo.co.uk/services/customs-compliance/) ensure all documentation reflects the precise nature of your shipment.

## Why Choose Ocean Cargo for Your Global Shipping Needs?

Navigating the complexities of international freight requires more than just moving goods from A to B. It demands a deep understanding of nautical terminology, cargo dynamics, customs regulations, and global logistics networks. At Ocean Cargo, we bring over 25 years of expertise to every shipment, ensuring your cargo reaches its destination safely, efficiently, and on time.

Our hands-on, consultative approach means we work closely with you to understand your specific requirements, whether you're shipping standard containers or complex project cargo. We simplify the process, providing transparent communication and proactive solutions to potential challenges.

- **Expert Knowledge:** Our team comprises seasoned logistics professionals who understand the nuances of global shipping, from ATHWARTSHIPS stowage to Incoterms.
- **Comprehensive Services:** From [air freight](https://oceancargo.co.uk/services/air-freight/) for urgent consignments to robust [road freight](https://oceancargo.co.uk/services/road-freight/) solutions, we cover all modes of transport.
- **Global Network:** Our extensive network ensures reliable service to and from key markets worldwide.
- **Dedicated Support:** We pride ourselves on building strong client relationships, offering personalised service and unwavering support throughout the shipping journey.
- **Compliance Assurance:** Our expert [customs compliance](https://oceancargo.co.uk/services/customs-compliance/) team ensures all regulatory requirements are met, preventing costly delays.

When you partner with Ocean Cargo, you gain a strategic ally committed to the success of your supply chain. We transform complex logistics into a streamlined, predictable process, allowing you to focus on your core business.

#### Is ATHWARTSHIPS the same as "across the beam"?

Yes, "ATHWARTSHIPS" is synonymous with "across the beam" or "across the width of the ship." Both terms describe a direction perpendicular to the vessel's fore-and-aft (lengthwise) axis.

#### Why is ATHWARTSHIPS important for cargo loading?

It's crucial for optimising space, ensuring even weight distribution, and maintaining vessel stability. For oversized or heavy cargo, positioning ATHWARTSHIPS can be the only way to fit the item on board or to distribute its weight safely across the ship's structure, preventing stress points and potential damage.

#### Does ATHWARTSHIPS apply to all types of vessels?

Yes, the term ATHWARTSHIPS is a fundamental nautical concept applicable to all types of vessels, from small boats to large container ships, bulk carriers, and tankers. It describes a universal directional reference point on any ship.

#### How does Ocean Cargo ensure proper cargo stowage, including ATHWARTSHIPS considerations?

Ocean Cargo employs experienced cargo superintendents and works with reputable carriers who adhere to strict international maritime regulations. We meticulously plan stowage, considering cargo dimensions, weight, and the vessel's stability characteristics, to ensure safe and compliant transport, including optimal ATHWARTSHIPS positioning where necessary.

### Ready to simplify your global logistics?

Get advice and a quote for your next shipment. Contact the Ocean Cargo team to start shipping.

[Freight Quote](https://oceancargo.co.uk/contact-us)

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