The Rise and Fall of HMAS Otama
Built in Scotland and commissioned into the Royal Australian Navy (RAN) in 1978, HMAS Otama was an Oberon-class submarine and the final vessel of her kind to enter Australian service.
🕵️ The Cold War “Mystery Boat”
The Otama was no ordinary submarine. Recognized as one of the RAN’s elite “Mystery Boats,” she was outfitted with advanced, specialized equipment designed for classified intelligence gathering. Throughout the Cold War, she slipped into foreign waters on secret missions, silently monitoring Soviet Pacific Fleet movements and conducting vital coastal surveillance across Asia.
By 1980, she was a centerpiece of the Navy’s major fleet exercises, and between 1983 and 1985, she underwent an extensive electronic and structural upgrade to sharpen her operational edge.
⚓ Tragedy and Extended Service
Tragedy struck the vessel in August 1987 during a training exercise off the coast of New South Wales. Due to a communication error, the submarine submerged while two crew members were still working inside the sail (fin), resulting in the heartbreaking loss of both sailors.
Despite this dark chapter, Otama remained a reliable workhorse. Though scheduled to retire earlier, her service was extended until late 2000 to fill operational gaps while the Navy’s next-generation Collins-class submarines ironed out their early technical issues.
🏛️ The Battle for Preservation
Following her decommissioning in 2001, a new chapter began:
The Vision: The Western Port Oberon Association purchased the Otama, aiming to bring her to the Mornington Peninsula as the premier floating exhibit for the proposed Victorian Maritime Centre.
The Bureaucratic Gridlock: For years, the association battled to secure a permanent home. Moored off Hastings near the Western Port Marina, the project stalled due to shifting local approvals and a failure to secure final planning permits.
The eBay Listing: Faced with mounting maintenance costs and regulatory deadlocks, the association made global headlines in 2008 by listing the historic 2,000-ton submarine on eBay. While the auction sparked intense public interest, it failed to secure a buyer.
💔 A Somber End
Despite more than two decades of passionate fundraising and tireless advocacy by veterans and community volunteers, the battle to save the Otama eventually ran out of time. Deemed a maritime hazard after years of exposure to the elements, the vessel was ultimately sold to shipbreakers, transported to Western Australia, and recycled.
While the physical submarine is gone, her legacy as a silent guardian of Australia’s deep seas lives on through the records, artifacts, and memories preserved by maritime historians.
Design and construction
The Evolution and Anatomy of Australia’s Oberon-Class
⚓ Design and Acquisition History
The Oberon-class submarines were heavily inspired by the British Porpoise-class design, but featured significant upgrades, including a redesigned hull for superior structural integrity, advanced sensor arrays, and enhanced stealth capabilities.
Securing these vessels was a milestone for the nation; it marked the fourth—and ultimately successful—attempt by the Royal Australian Navy (RAN) to establish a permanent submarine branch.
The RAN originally planned to order eight submarines in two distinct batches of four.
The First Batch: Approved in 1963.
The Second Batch: Approved in the late 1960s, which included HMAS Otama.
Though construction on the second batch began in 1969, budgetary shifts forced the cancellation of the final two planned vessels, with their funding redirected to support the Navy’s Fleet Air Arm. This left the RAN with a highly capable fleet of six Oberon-class submarines.
⚙️ Technical Specifications
The Oberon-class submarines were marvels of conventional maritime engineering, built to balance endurance with silent operation:
| Specification | Dimension / Capability |
| Length | 295.2 feet (90.0 m) |
| Beam (Width) | 26.5 feet (8.1 m) |
| Draught (Surfaced) | 18 feet (5.5 m) |
| Surface Displacement | 2,030 tons (at full load) |
| Submerged Displacement | 2,410 tons |
| Test Depth | 200 meters (660 ft) below sea level |
⚡ Propulsion and Performance
Power was generated by two robust Admiralty Standard Range V16 diesel generators, which charged the massive onboard batteries. When running silent underwater, an English Electric motor delivered 3,500 brake horsepower and 4,500 shaft horsepower directly to the twin propeller shafts.
Surface Speed: Up to 12 knots (22 km/h)
Submerged Speed: Up to 17 knots (31 km/h)
Operational Range: 9,000 nautical miles (17,000 km) at a cruising speed of 12 knots
👥 Crew Complement
Life aboard the submarine was tightly packed, with the crew size expanding over the vessel’s operational lifespan to accommodate evolving technologies:
Initial Crew (Launch): 8 Officers and 56 sailors (64 total)
Final Crew (Decommissioning): Expanded to 60 sailors, plus officers
Training Capacity: Capable of carrying up to 16 additional trainees on instructional deployments
HMAS Otama Launch
Building the Fleet: The Evolution and Power of the Oberon Class
⚓ A Legacy of Stealth and Survival
Derived from the British Porpoise-class design, the Oberon-class submarines represented a massive leap forward in underwater warfare. They featured a redesigned hull for superior structural integrity, upgraded sensor packages, and advanced acoustic masking that greatly enhanced their stealth.
Securing these vessels was a historic milestone, marking the fourth—and ultimately successful—attempt by the Royal Australian Navy (RAN) to establish a permanent submarine branch.
The procurement of the fleet was planned in two distinct phases:
The First Batch: Four submarines were approved and ordered in 1963.
The Second Batch: A second group of four, which included HMAS Otama, was approved in the late 1960s, with construction beginning in 1969.
Before the final two submarines of the second batch could be built, the project was scaled back due to shifting defense priorities. The remaining funds were redirected to support the Navy’s Fleet Air Arm, leaving the RAN with a highly capable, six-vessel Oberon fleet.
⚙️ Dimensions & Displacement
Engineered for long-range endurance and silent operations, the submarine’s physical layout was built to withstand the immense pressures of the deep sea:
Length: 295.2 feet (90.0 m)
Beam: 26.5 feet (8.1 m)
Draught (Surfaced): 18 feet (5.5 m)
Surface Displacement: 2,030 tons (at full load)
Submerged Displacement: 2,410 tons
Test Depth: 200 meters (660 ft) below sea level
⚡ Propulsion & Performance
The submarine relied on a powerful diesel-electric configuration. Two Admiralty Standard Range V16 diesel generators provided charging power to the onboard batteries. When running submerged, an English Electric motor delivered 3,500 brake horsepower and 4,500 shaft horsepower directly to the twin propeller shafts.
Top Surface Speed: 12 knots (22 km/h)
Top Submerged Speed: 17 knots (31 km/h)
Operational Range: 9,000 nautical miles (17,000 km) at a efficient cruising speed of 12 knots
👥 Onboard Complement
Life inside the vessel’s narrow hull was incredibly tight. Over the decades, advancing technology required additional hands to operate the systems, causing the onboard crew size to grow:
Launch Crew: 8 officers and 56 sailors (64 total)
Decommissioning Crew: Expanded to 60 sailors, plus officers
Training Capacity: Built with berths to accommodate up to 16 additional trainees during instructional deployments
The Acquisition of HMAS Otama: A Vision for Western Port
⚓ Securing the Prize
When Max Bryant learned that the Royal Australian Navy was retiring its Oberon-class fleet, he recognized a once-in-a-lifetime opportunity. He contacted the Navy Disposal Department to secure HMAS Otama—the Scottish-built final vessel of her class, which had been decommissioned in December 2000.
Max submitted a meticulous proposal that deeply impressed Dr. Brendan Nelson, then-Parliamentary Secretary to the Minister for Defence. Against fierce competition, the Western Port bid emerged victorious. Max secured a $500,000 government grant, which helped fund the $550,000 purchase price and the $306,000 towing fee. However, hidden costs quickly mounted: gaining EPA approval to clean the ballast tanks added $40,000, while maritime transit insurance cost an additional $96,000. By the time the logistics were finalized, the initial funding was nearly exhausted.
🌊 The Journey to Western Port
On 30 April 2002, HMAS Otama proudly sailed into Western Port Bay, marking the triumphant conclusion of a dramatic 13-day, 2,000-mile tow from HMAS Stirling in Western Australia.
📈 Revolutionizing Maritime Tourism
The arrival of a intact submarine promised to revolutionize maritime tourism in Victoria. While Australia had previously displayed only fragments of submarines, the success of fully preserved sister ships—such as HMAS Onslow in Sydney and HMAS Ovens in Fremantle—proved the immense drawing power of these vessels. In Fremantle alone, the Ovens attracted 55,000 visitors in just eight months, ultimately sparking a massive $24 million museum relocation and development.
🏛️ An Innovative Vision for the Future
The Western Port Oberon Association designed a groundbreaking, land-based exhibition concept for the Otama. To bypass the steep accessibility challenges common to submarine tours, the innovative blueprint involved:
Modifying the Hull: Carefully cutting structural openings directly into the submarine’s side.
Pedestrian Tunnels: Connecting those openings to the main pavilion of the Victorian Maritime Centre via seamless, climate-controlled walkways, allowing visitors of all mobility levels to peer inside.
With over seven million tourists visiting the Mornington Peninsula annually, the Victorian Maritime Centre was perfectly positioned to become a premier national attraction. This unique architectural presentation promised an unparalleled, world-class submarine experience—forever cementing Western Port on the global maritime tourism map.
The Loss of HMAS Otama: A Betrayal of Community and Heritage
The tragic and unnecessary loss of the submarine HMAS Otama has sparked widespread outrage across the Victorian public. What should have been the spectacular centerpiece of a major tourism and heritage project in Western Port has instead become a symbol of bureaucratic failure.
🛑 Two Decades of Hardship and Zero Support
The Western Port Oberon Association purchased the Otama in 2003 for $55,000, driven by a vision to preserve Australia’s proud naval history. For nearly twenty years, volunteers dedicated their lives to the project. Yet, despite countless letters, proposals, and meetings with politicians, the initiative was entirely abandoned by federal, state, and local governments, receiving zero meaningful support.
Instead of backing, the association faced escalating pressure:
2020: Defence Disposals offered to buy the submarine back for a single dollar or completely remove it, later suggesting the insulting compromise of cutting it into pieces to return as fragments.
2021: Following severe storms that damaged the vessel, Parks Victoria stepped in—not to assist, but to issue an ultimatum. Under intense bureaucratic pressure, the association was ultimately forced to hand over the vessel for one dollar.
💸 The Financial and Social Cost
The collapse of this project is a devastating blow to the Mornington Peninsula, resulting in a profound loss of local opportunities:
Economic Impact: The completed project was projected to create up to 200 local jobs and provide a vital financial lifeline for surrounding small businesses.
Veteran Support: The site was intended to serve as an active therapeutic platform and community hub for naval veterans.
Fiscal Irresponsibility: In a baffling financial decision, Parks Victoria reportedly spent upwards of $5 million to remove and scrap the Otama—a sum that could have been up to ten times less than the cost of safely bringing her ashore whole.
⚓ The Fight Isn’t Over
The failure to salvage this project remains a deep mystery to a community that repeatedly rallied behind it with thousands of signatures and letters of support.
But the battle for the Otama’s legacy is not over. We need a stronger, united voice to champion this cause. If we could not save the vessel whole, we must now demand that its key historical artifacts and structural pieces be returned to Western Port where they belong.
Get Involved: Join us in holding decision-makers accountable and ensuring that the courage of our submariners and the decades of work by our volunteers are properly honored. Let’s bring a piece of the Otama home.
Playlist
Administration admin@vmctestwmg.com
Enquiries Info@vmctestwmg.com
Bookings bookings@vmctestwmg.com
The Victorian Maritime Centre
220 The Esplanade
Crib Point