ANI Report
A distributed naval force comprising fast attack missile boats and aerial drones offers a cost-effective and tactically superior alternative to reliance on large, vulnerable ships. Attack boats can be highly versatile, capable of being armed with anti-ship and surface-to-air missiles, and using targeting data from other vessels, ground stations, or aircraft. This allows them to engage targets at long distances, dealing with surface threats while also providing air-defence coverage.
Historically, Australia’s naval procurement has prioritized destroyers, frigates, and submarines, formidable but costly and operationally complex assets. These large vessels are increasingly vulnerable in modern conflicts, where advanced sensors, precision-guided weapons, and unconventional tactics can quickly neutralize them. Ukraine’s sinking of the Russian cruiser Moskva in 2022 underscored the susceptibility of even the most advanced warships to anti-ship weapons.
History demonstrates the effectiveness of smaller, agile, and numerous vessels. During World War II, PT boats excelled at hit-and-run tactics against larger Japanese vessels, leveraging speed and agility to outmatch superior firepower. The Battle of Savo Island highlighted how coordinated small-ship operations could disrupt even well-defended fleets, proving the tactical value of dispersed mobile attack vessels.
Australia must adopt the concept of distributed lethality, spreading combat power across interconnected vessels and aircraft. A network of such platforms could overwhelm adversaries by presenting numerous threats across three dimensions. Their small size would also make them harder to detect and target, complicating an enemy’s engagement strategies.
Critics may question the survivability of small vessels in high-intensity conflicts, but advanced technologies help mitigate such concerns. Stealth features, electronic warfare systems, decoys, and jamming equipment can disrupt enemy targeting. Combined with tactics emphasizing speed, dispersion, hit-and-run strikes, and over-the-horizon targeting, these vessels can minimize vulnerability while maximizing offensive potential.
While they lack the oceanic reach and integrated sensor suites of larger warships, attack boats do not require such systems, thanks to using targeting data from elsewhere. This enhances their strike effectiveness while minimizing the risk of direct exposure. This agile warfare approach imposes significant challenges on adversaries attempting to mount a cohesive defence. Operating alongside uncrewed aircraft, they would also complement air and land forces in joint operations.
The financial argument is compelling. A fleet of 25 missile attack boats, each costing $100 million to $150 million, would cost between $2.5 billion and $3.75 billion, far less than the $9 billion required for three Hobart-class destroyers. Operational costs are also lower. A destroyer needs a crew of about 200, but an attack boat can operate with one of 15 to 30. The attack boat crewing requirement is so low that using dual crews could be considered, so each vessel can be at sea for longer while also giving crew members extended time ashore, potentially improving retention in the navy.
Corvettes are smaller and cheaper than destroyers, but attack boats outperform them in key metrics. For example, corvettes typically still require crews of 40 to 60 people. The smaller size and enhanced manoeuvrability of attack boats make them more effective in littoral and shallow waters, where corvettes may struggle. Modern attack boats can reach 45 knots (83 km/h), far outpacing corvettes, which generally max out at 25 to 30 knots.
Operational range and endurance, often cited as a limitation of smaller vessels, can be addressed by adding bunkering and replenishment options. Forward operating bases along Australia’s northern approaches could support extended deployments, while underway replenishment vessels would further bolster operational reach across critical maritime zones and enable convoy operations.
Australia’s vast coastline and its proximity to key maritime choke points make a dispersed fleet of agile vessels even more valuable. They could hide among islands, taking risks in narrow waters where larger ships fear to tread.
The urgency of shifting Australia’s naval strategy to distributed lethality cannot be overstated. Smaller, agile vessels offer a pragmatic and forward-thinking alternative to large ships, addressing vulnerabilities while enhancing operational flexibility.