South Korea Submarine Offer to Canada: $42B Bid Details

Canada’s underwater defense needs are reshaping a $42 billion decision—and two major shipbuilders are competing to deliver. South Korea’s Hanwha Ocean, backed by whole-of-government support, is pitching its KSS-III Batch-II against Germany’s TKMS Type 212CD. This article breaks down both proposals, their technical differences, and what’s at stake for Canada’s naval future.

Deal value: $42 billion (60 trillion won) ·
Korean bidder: Hanwha Ocean (KSS-III Batch-II) ·
German bidder: TKMS (212CD) ·
Proposed subs: 4 by 2035 ·
Project name: Canadian Patrol Submarine Project

Key parameters for Canada’s submarine competition.

Who will Canada buy submarines from?

Two bidders remain in the running for Canada’s largest naval procurement in decades. Hanwha Ocean from South Korea and TKMS (ThyssenKrupp Marine Systems) from Germany are competing for the Canadian Patrol Submarine Project, which aims to replace the aging Victoria-class fleet.

South Korean consortium bid

Hanwha Ocean has assembled an aggressive campaign backed by South Korea’s entire government apparatus. On February 20, 2026, South Korea formalized a national framework to support its CPSP bid through DAPA (the Defense Acquisition Program Administration), according to Naval News. The Hanwha team signed MOUs with Algoma Steel, Telesat, MDA Space, Cohere, and PV Labs on January 27, 2026, offering up to USD $250 million for steel mill and CPSP purchases, as documented by Hanwha. The company proposes delivering 4 KSS-III submarines before 2035, with the full 12-sub fleet completed by 2043 at a rate of one per year.

German-Norwegian joint project

TKMS is offering the Type 212CD, a design optimized for stealth in northern littoral waters with NATO interoperability. Canada signed a trilateral letter of intent with Germany and Norway for the Type 212CD in summer 2025, as noted in independent analysis. The 212CD has been exported to over 20 nations, giving it a proven track record in allied navies. However, the German-Norwegian bid emphasizes NATO ties rather than Canadian industrial content.

How many submarines does Canada have now?

The Royal Canadian Navy operates four Victoria-class submarines, all of which have faced persistent maintenance challenges and availability issues.

Current fleet status

The Victoria-class boats—HMCS Victoria, HMCS Windsor, HMCS Corner Brook, and HMCS Chicoutimi—have spent more time in maintenance than at sea. Early retirement of these vessels could save approximately $1 billion in maintenance costs, according to Hanwha’s analysis. The fleet’s limited availability has created gaps in Canada’s ability to maintain a continuous underwater presence across three oceans.

Retirement plans

CPSP began in 2021 to replace this fleet with up to 12 new submarines, according to Wikipedia. The CPSP timeline aims to have new submarines operational before the Victoria-class reaches the end of its service life. Hanwha claims it can deliver the first KSS-III within six years of contract award, per KSS-III.ca. This accelerated timeline could allow Canada to retire the Victoria-class earlier, redirecting maintenance funds toward the new fleet.

Where did Canada get their submarines?

Canada’s current submarine fleet has British roots but has operated under Royal Canadian Navy command since the early 2000s. The submarines were acquired second-hand from the United Kingdom and underwent extensive refits to extend their service life.

Previous acquisitions

Canada purchased the four Upholder/Victoria-class submarines from the UK between 1993 and 1998, with the first vessel entering Canadian service in 2001. The purchase price was relatively low, but subsequent maintenance costs have far exceeded initial expectations.

Victoria-class origins

The Victoria-class originated as the UK’s Upholder-class, designed for coastal operations rather than the long-endurance blue-water missions Canada requires. This design mismatch has contributed to operational limitations, particularly in Arctic waters where Canada’s defense priorities increasingly focus.

How many submarines does South Korea have?

South Korea operates one of the largest and most advanced conventional submarine fleets in the Asia-Pacific region. The Republic of Korea Navy fields multiple classes, with the KSS-III series representing its most capable blue-water assets.

Fleet composition

South Korea’s submarine force includes the KSS-I (Type 209), KSS-II (Type 214), and KSS-III classes, totaling around 15-20 boats depending on operational availability. The KSS-III Batch II being offered to Canada displaces approximately 3,600 tonnes, making it significantly larger than its German competitor, per independent technical analysis.

Capabilities

The KSS-III features a 10-cell vertical launch system (VLS), lithium-ion batteries, and six 533mm torpedo tubes. Its larger hull provides more reserve buoyancy for Arctic sail strengthening, according to technical assessment. The submarine is in active production and reported to have the longest submerged endurance for anti-submarine warfare and anti-surface missions among conventional designs.

What is South Korea’s submarine offer to Canada?

Hanwha Ocean’s proposal centers on delivering operational capability quickly while building Canadian industrial participation. The offer includes not just submarines but a comprehensive partnership framework involving domestic firms across multiple sectors.

Hanwha Ocean proposal details

Hanwha Ocean was selected as a qualified supplier for CPSP in August 2025, according to PCL Construction. The company signed an MOU with PCL Construction on November 10, 2025, for CPSP infrastructure development. Hanwha’s proposal promises four submarines before 2035, with subsequent vessels delivered at one per year until the full fleet of 12 is complete. The KSS-III meets all High-Level Mandatory Requirements including Arctic deployability, per official documentation.

Delivery timeline

Hanwha can deliver the first KSS-III within six years of contract award, according to KSS-III.ca. This timeline would allow Canada to begin replacing the Victoria-class significantly earlier than traditional submarine procurement schedules. Hanwha’s industrial alliances with Canadian firms aim to build domestic capability for maintenance and sustainment, reducing long-term operational dependencies.

The Canadian Patrol Submarine Project seeks more than just capability, schedule, and cost compliance—it requires economic and industrial benefits for Canada, as Naval News reports. Hanwha’s strategy directly addresses this by embedding Canadian companies in the supply chain from day one.

Three critical differences separate the two final contenders in Canada’s submarine competition.

Key technical specifications for the Canadian Patrol Submarine Project bidders.

Timeline

The Canadian submarine competition has moved quickly from initial shortlisting to active government-level campaigning.

The implication: South Korea’s coordinated push over just six months shows how seriously Seoul views this contract, while Canada’s parallel engagement with Germany signals it hasn’t made up its mind.

Confirmed and Unconfirmed

The facts on record versus what remains uncertain in Canada’s submarine competition.

What experts say

The KSS-III is the only conventional submarine that can meet all of Canada’s requirements.

— Michael J. Lalonde, independent defense analyst (Technical Assessment)

CPSP represents an opportunity to build long-term industrial partnerships that deliver real value for Canada.

— Glenn Copeland, CEO, Hanwha Defence Canada (Naval News)

Hanwha Ocean has the fastest delivery schedule, able to deliver four KSS-III submarines to fully replace Canada’s current Victoria-class fleet before 2035.

— Hanwha Ocean (Official Statement)

What this means: The expert consensus tilts toward Hanwha on delivery speed and industrial content, but analysts have reservations about a non-NATO supplier for a program of this strategic importance.

Summary

Canada stands at a decision point that will shape its underwater defense capabilities for decades. Hanwha Ocean has mobilized South Korea’s government behind a proposal that combines rapid delivery, substantial industrial investment, and a submarine design explicitly validated for Canadian requirements. TKMS counters with NATO interoperability, an established export record, and the credibility of a traditional ally.

For the Royal Canadian Navy, the stakes are concrete: whoever wins delivers the boats that will patrol three oceans, including Arctic waters the current Victoria-class was never designed to handle. Canada has asked both bidders to improve their offers, signaling that neither proposal has yet sealed the deal.

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