KSS-III arrives in Canada as Hanwha Ocean intensifies push for Canadian submarine program

After a more than 7,500-nautical-mile trans-Pacific deployment, the Republic of Korea Navy submarine Dosan Ahn Changho has arrived at CFB Esquimalt in British Columbia, marking a significant step in South Korea’s campaign to secure Canada’s future submarine program. The visit is being positioned by Hanwha Ocean not merely as a naval deployment, but as a full-scale demonstration of the operational endurance, interoperability and industrial credibility of its KSS-III design for the Canadian Patrol Submarine Project (CPSP).

business maritime economy investments worldwide shipbuilding industry defense industry equipment and technology news

28 may 2026   |   08:27   |   Source: Gazeta Morska   |   Prepared by: Kamil Kusier   |   Print

fot. Hanwha Ocean

Operational demonstration across the Pacific

The arrival of the ROK Navy submarine Dosan Ahn Changho at Canadian Forces Base Esquimalt follows a two-month voyage that began at Jinhae Naval Base in South Korea on March 25. The deployment included logistical stops in Guam and Hawaii before reaching Canada’s Pacific coast.

The deployment itself is central to Hanwha Ocean’s strategic messaging. By sending an in-service submarine across the Pacific to operate alongside the Royal Canadian Navy, Seoul is attempting to demonstrate that the KSS-III is not merely a coastal or regional platform, but a genuinely long-range conventional submarine capable of supporting sustained blue-water operations.

In Hawaii, two Royal Canadian Navy submariners embarked aboard the vessel for the final leg to Canada, reinforcing the interoperability narrative that has become a core component of the Korean proposal.

The submarine will now participate in joint naval activities alongside the ROK Navy frigate Daejeon, in what appears designed to underscore compatibility with NATO procedures and allied operational standards.

South Korea’s most ambitious conventional submarine

The KSS-III program represents South Korea’s most advanced indigenous submarine development effort to date. Built for the Republic of Korea Navy, the class moves beyond earlier Korean submarines derived from German Type 209 and Type 214 designs.

With a displacement exceeding 3,000 tonnes, the KSS-III belongs to a category of large ocean-going conventional submarines intended for long-endurance missions. The boats incorporate air-independent propulsion (AIP), advanced sonar suites and modern combat systems, while future batches are expected to integrate lithium-ion battery technology to further enhance underwater endurance and operational flexibility.

One of the design’s most distinctive features is its vertical launch capability for cruise and ballistic missiles — a relatively rare capability among conventionally powered submarines currently available on the export market.

For Canada, however, the central question is not missile capability but range, endurance and Arctic suitability. Ottawa’s future submarine fleet will be expected to operate across the Atlantic, Pacific and Arctic theatres, placing extraordinary demands on deployability and sustainment.

Canada’s growing submarine challenge

The Canadian Patrol Submarine Project is expected to become one of the largest defence procurements in the country’s modern naval history. Canada’s existing Victoria-class submarines, acquired second-hand from the United Kingdom in the late 1990s, have faced years of maintenance challenges, limited availability and capability concerns.

As geopolitical competition intensifies in the Arctic and Indo-Pacific, Ottawa is under increasing pressure to rebuild a credible undersea warfare capability.

The debate inside Canada increasingly centres on whether a modern conventional submarine can adequately meet the country’s strategic requirements, particularly in Arctic operations. While nuclear-powered submarines would provide superior under-ice endurance and sustained high-speed transit, their acquisition and life-cycle costs remain politically and financially difficult for Canada.

This reality may create an opening for large advanced conventional submarines such as the KSS-III, especially if they can deliver lower acquisition costs and significantly faster delivery schedules.

Hanwha’s key selling point: speed

Hanwha Ocean’s most aggressive argument is schedule certainty. The company claims it can deliver four submarines before 2035 if a contract is signed in 2026, fully replacing Canada’s Victoria-class fleet within the next decade.

According to the company’s proposal, the remaining eight submarines could then be delivered at a rate of one per year, allowing all 12 boats to enter Canadian service by 2043.

That timeline is being positioned as a decisive competitive advantage. Western submarine construction programs have increasingly struggled with industrial bottlenecks, workforce shortages and lengthy production cycles. South Korea, by contrast, has developed one of the world’s most efficient naval shipbuilding sectors, supported by continuous domestic production and strong state backing.

Hanwha is also heavily emphasizing industrial participation. The company says it has agreements and memoranda with more than 70 Canadian firms and institutions, including CAE, MDA Space and Telesat.

The proposal includes plans for Canadian-based maintenance, repair and overhaul facilities on both coasts, technology transfer, underwater warfare partnerships and the establishment of the Hanwha Arctic and Defence Innovation Centre (HADIC), focused on advanced defence technologies, autonomy, AI and digital engineering.

South Korea’s expanding defence footprint in NATO

The Canadian submarine campaign reflects a broader transformation underway in the global defence market. South Korea has rapidly emerged as one of the world’s most dynamic arms exporters, leveraging competitive pricing, fast delivery schedules and growing technological sophistication.

Recent defence agreements with NATO members — most notably Poland’s large-scale procurement of K2 tanks, K9 self-propelled howitzers and FA-50 aircraft — have demonstrated Seoul’s ability to compete directly with established American and European suppliers.

The KSS-III campaign suggests South Korea now aims to extend that momentum into the highly competitive and politically sensitive submarine market.

Success in Canada would represent a major strategic breakthrough, giving South Korea one of the most prominent export references for a large conventional submarine program within NATO.

More than a port visit

The arrival of Dosan Ahn Changho in Canada is ultimately about far more than a naval courtesy visit. It is a carefully orchestrated industrial and geopolitical signal.

By physically deploying an operational submarine across the Pacific and integrating with Canadian forces, South Korea is attempting to demonstrate not only the technical maturity of the KSS-III platform, but also the reliability of its defence industrial base and its long-term strategic value as a partner for NATO countries.

For Canada, the visit highlights the difficult choices ahead as it seeks to rebuild a credible submarine capability amid rising strategic competition in both the Arctic and Indo-Pacific.

The CPSP competition remains open, but Seoul has now made clear that it intends to be viewed not as an outsider, but as a serious contender in one of the most consequential naval procurement programs currently under consideration among NATO allies.

Buy us a coffee, and we’ll invest in great maritime journalism! Support Gazeta Morska and help us sail forward – click here!

KSS-III okręty podwodne Kanada Hanwha Ocean Canadian Patrol Submarine Project koreański przemysł zbrojeniowy

comments

---

enter content

COMMENT

nick

Add the first comment