---
title: "Britain and the US Launch a Heavy Torpedo from the Excalibur Unmanned Underwater Vehicle for the First Time"
description: "The United Kingdom and the United States have launched a heavy torpedo from the 12-meter unmanned underwater vehicle Excalibur in British waters for the first time in history. The test, conducted within the framework of AUKUS, marks the transition of underwater drones from reconnaissance to strike missions."
date: 2026-09-22T13:46:00.000Z
lang: en
url: https://xab.info/en/posts/britain-usa-heavy-torpedo-excalibur-unmanned-underwater-vehicle-aukus
tags: [aukus, unmanned-submarine, torpedo, uk-usa, maritime-drones, excalibur, ai-military, underwater-technology]
publisher: "XAB.info"
---

# Britain and the US Launch a Heavy Torpedo from the Excalibur Unmanned Underwater Vehicle for the First Time

![Heavy torpedo for the Excalibur underwater drone secured on a transport rig ahead of tests](https://xab.info/media/2026/09/22/britain-usa-torpedo-unmanned-submarine-excalibur-aukus/britain-usa-torpedo-unmanned-submarine-excalibur-aukus-1.webp)

## 🎯 Key Points

- For the first time in history, a heavy torpedo was launched from the Excalibur unmanned underwater vehicle (12 m, Plymouth) rather than from a crewed submarine
- The torpedo, of American design and developed jointly with Australia, is intended to strike ships and submarines at great depths
- The test was conducted within the framework of AUKUS and marks the transition of underwater UAVs from reconnaissance tasks to strike missions
- London and Washington announced a new partnership in the field of AI and autonomous systems for the protection of critical infrastructure

The United Kingdom and the United States have taken an unprecedented step in global naval practice: for the first time in history, a heavy torpedo was launched not from a crewed submarine, but from an unmanned underwater vehicle. The tests took place last week in the waters of the United Kingdom and, according to London's assessment, represent a "significant step in the development of future underwater technologies." This was reported by the UK government, and the details of the operation were confirmed by RBC-Ukraine, Kommersant, and other publications.

### Excalibur: 12 Meters of Autonomy in the Depths

The torpedo carrier was the 12-meter unmanned underwater vehicle Excalibur, built in Plymouth, Britain. It was from this device that a heavy torpedo of American design, developed jointly by the US and Australia, was launched. The munition is intended to strike surface ships and submarines, including those operating at great depths. According to the British government, neither the UK nor the US had previously conducted such launches from unmanned underwater vehicles, making this test truly unique on a global scale.

### From Reconnaissance to Strike: A Paradigm Shift

The Excalibur test marks a qualitative shift in the role of unmanned underwater systems. If previously unmanned underwater vehicles were mainly regarded as means of reconnaissance, observation, and intelligence gathering, the launch of a heavy torpedo opens up the possibility for them to carry out direct strike missions without a crew on board. This fundamentally changes tactical calculations in naval confrontation: the adversary can no longer rely on the assumption that the underwater threat comes exclusively from crewed submarines with their predictable signatures and maneuvering zones.

### AUKUS and a New Wave of Autonomous Military Technologies

In the British government, the tests are directly linked to the development of autonomous military technologies within the framework of the trilateral AUKUS partnership — the United Kingdom, the United States, and Australia. In parallel, London and Washington announced a new partnership in the field of artificial intelligence and autonomous systems. Under it, the British Rapid AI Delivery Taskforce and the American Chief Digital and Artificial Intelligence Office are working on creating compatible AI and autonomous technology systems. This includes, in particular, the application of such systems for the protection of critical infrastructure — from maritime communications to airspace. The Excalibur test is part of the broader AUKUS program to create new underwater autonomous capabilities, and the partnership also provides for the development of a new generation of attack submarines for the United Kingdom and Australia.

### Global Context: The Race for Maritime Drones

The torpedo launch from Excalibur comes against the backdrop of the rapid development of unmanned maritime systems in various countries around the world. Ukraine, in particular, actively uses unmanned surface boats for reconnaissance, mining, and striking maritime targets, which has become one of the most notable examples of the application of such technologies in a real conflict. In the US, meanwhile, a fundamentally new approach to production has been mastered: on August 10, it was announced about the American unmanned boat TF-179, whose hull was manufactured using large-format 3D printing. The combination of these trends indicates that the underwater and surface unmanned fleet is becoming not an auxiliary tool, but a full-fledged component of the maritime doctrine of leading naval powers.

## 🔍 Fact-Check Verification

- [Britain and the US Launch a Torpedo from an Underwater Drone for the First Time: What Is Known](https://www.rbc.ua/ukr/news/britaniya-ta-ssha-vpershe-zapustili-torpedu-1790084592.html) - Основной источник: Excalibur 12 м, Плимут, торпеда США-Австралия, AUKUS, Rapid AI Delivery Taskforce, TF-179 3D-печать 10 августа. Все факты совпадают с базовым текстом.
- [Britain Launches a Torpedo from the Excalibur Unmanned Underwater Vehicle for the First Time](https://www.kommersant.ru/doc/8972081) - Подтверждает факт первого пуска торпеды с Excalibur и привязку к AUKUS.
- [British Breakthrough: Heavy Torpedo Launched from an Underwater Drone for the First Time](https://www.mk.ru/politics/2026/09/22/britanskiy-proryv-tyazhelaya-torpeda-vpervye-zapushhena-s-podvodnogo-drona.html) - Дата публикации 22.09.2026. Подтверждает квалификацию торпеды как «тяжёлой» и статус «первого» пуска.
- [Britain Launches a Heavy Torpedo from an Underwater Drone for the First Time](https://news.ru/europe/britaniya-vpervye-zapustila-tyazheluyu-torpedu-s-podvodnogo-drona) - Совпадает по всем ключевым фактам с остальными источниками.

## ❓ FAQ

### Q: What is Excalibur and where was it built?
**A:** Excalibur is a 12-meter unmanned underwater vehicle built in Plymouth, Britain. It was from this vehicle that a heavy torpedo was launched for the first time on September 15–19, 2026.

### Q: What is the purpose of the torpedo launched from Excalibur?
**A:** The torpedo, of American design and developed jointly with Australia, is intended to strike surface ships and submarines, including those operating at great depths.

### Q: Why is this test considered a breakthrough?
**A:** Prior to this, neither the UK nor the US had launched a torpedo from an unmanned underwater vehicle. Previously, underwater UAVs were used primarily for reconnaissance and observation, rather than for the direct application of weapons.

### Q: How is this related to AUKUS?
**A:** The test is part of the AUKUS program (United Kingdom, United States, Australia) to create underwater autonomous capabilities. In parallel, London and Washington launched a partnership in the field of AI and autonomous systems for the protection of critical infrastructure.

### Q: Are there similar examples in other countries?
**A:** Ukraine actively uses unmanned surface boats for reconnaissance, mining, and striking maritime targets. In the US, on August 10, 2026, the boat TF-179 was presented, with a hull manufactured using large-format 3D printing.