美海軍研發「沉默鐵砧」空射魚雷　拓展航艦反潛作戰彈性

NAVAIR啟動徵詢　鎖定航艦戰機與無人機掛載

NAVAIR Seeks New Torpedo System for Carrier-Based Aircraft and UAVs

美國海軍航空系統司令部（NAVAIR）近日發布「沉默鐵砧」（Silent Anvil）空射魚雷（SAA-LT）徵詢書，計畫發展一款可由航空母艦艦載機運用的小型空射魚雷系統，藉此提升航艦航空兵力執行反潛作戰的彈性與距外攻擊能力。

The U.S. Naval Air Systems Command (NAVAIR) has issued a solicitation for the “Silent Anvil” Small Air-Launched Torpedo (SAA-LT), seeking a compact air-launched torpedo system that can be operated by carrier-based aircraft. The program is intended to enhance the flexibility and stand-off anti-submarine warfare capabilities of carrier aviation.

「沉默鐵砧」將是一款小型魚雷系統，可由航艦戰機及無人機掛載於翼下或整合至彈艙，執行距外反潛作戰等任務。美國海軍目前提供投標企業兩種潛在構型方向，包括直接研發具備滑翔能力的魚雷，或是開發可搭配美軍提供反潛系統的滑翔套件，讓既有武器具備空中滑翔與投放能力。

The Silent Anvil is envisioned as a compact torpedo system that could be carried under the wings or inside the weapons bays of carrier-based aircraft and unmanned systems for stand-off anti-submarine warfare missions. The Navy has outlined two potential approaches for industry: developing a torpedo with an integrated glide capability, or developing a glide kit capable of carrying a U.S. Navy-provided anti-submarine system.

無論採用何種技術構型，美國海軍均要求得標廠商具備每年生產至少60套系統的能力，並在3年內完成180套系統交付，顯示該計畫除著眼於技術研發，也希望迅速建立具備規模化生產能力的先進反潛武器體系。

Regardless of the configuration selected, the Navy requires the winning contractor to demonstrate an annual production capacity of at least 60 systems and deliver 180 systems within three years. The requirement indicates that the program is focused not only on technological development but also on rapidly establishing a scalable production capability for an advanced anti-submarine weapon.

重量限制268磅　尺寸可望接近SDB

Weight Limit Set at 268 Pounds, With a Size Comparable to the SDB

美國海軍規定，「沉默鐵砧」全系統重量應低於268磅（約121.5公斤），定位為小直徑、小型化反潛武器，並須具備在航空母艦上儲存與操作的條件。這項重量限制也意味著武器必須在體積、射程、感測能力與反潛效能之間取得平衡。

The U.S. Navy specifies that the Silent Anvil system must weigh less than 268 pounds, or approximately 121.5 kilograms. It is intended to be a small-diameter, lightweight anti-submarine weapon that can be stored and handled aboard aircraft carriers. The weight requirement places an emphasis on balancing size, range, sensing capability and anti-submarine performance.

USNI News分析認為，「沉默鐵砧」的尺寸可能與GBU-39「小直徑炸彈」（SDB）相近，因此有望利用現役BRU-61/A通用派龍架進行掛載。若最終採用這類掛載方式，航艦戰機一次便可攜帶多枚武器，進一步提升對水下目標的搜索與打擊密度。

USNI News suggests that the Silent Anvil could be similar in size to the GBU-39 Small Diameter Bomb (SDB), potentially allowing it to be carried by the existing BRU-61/A common carriage system. Such an approach could enable carrier-based aircraft to carry multiple weapons on a single sortie, increasing the density of underwater target engagement.

補足P-8A與MH-60R限制　強化航艦反潛縱深

Designed to Complement P-8A and MH-60R and Extend Carrier ASW Reach

目前美國海軍空基反潛作戰主力包括P-8A反潛巡邏機，以及航空母艦搭載的MH-60R「海鷹」直升機。P-8A具備較長航程，並整合「高高度反潛武器能力」（HAAWC），因此能執行一定程度的距外反潛任務，但其作戰運用仍高度依賴陸基機場支援。

The U.S. Navy currently relies primarily on the P-8A maritime patrol aircraft and carrier-based MH-60R helicopters for airborne anti-submarine warfare. The P-8A offers greater range and is equipped with the High Altitude Anti-Submarine Warfare Weapon Capability (HAAWC), allowing it to conduct certain stand-off ASW missions. However, its operations remain heavily dependent on land-based airfields.

此外，P-8A機體較大、速度相對較低，在高強度作戰環境下可能面臨更高威脅；MH-60R雖可直接部署於航空母艦，但受限於航程與滯空能力，其反潛搜索與防禦範圍相對有限。這也成為美國海軍尋求新型小型空射反潛武器的重要背景。

The P-8A’s relatively large airframe and lower speed could also make it more challenging to operate in a high-intensity combat environment. While the MH-60R can deploy directly from aircraft carriers, its range and endurance limitations restrict the area it can cover for anti-submarine missions. These limitations are part of the rationale behind the Navy’s pursuit of a new compact air-launched anti-submarine weapon.

透過「沉默鐵砧」搭配航艦戰機與無人機，美國海軍有望將反潛武器的投放平台進一步擴大，讓原本主要負責制空、對地或多用途任務的航空兵力，也能具備一定程度的反潛作戰能力。若計畫順利推進，將有助於建立更具分散性與彈性的航艦反潛作戰架構，以因應未來高強度海上作戰環境。

By pairing the Silent Anvil with carrier-based aircraft and unmanned systems, the U.S. Navy could expand the number of platforms capable of delivering anti-submarine weapons. This would allow aircraft primarily designed for air superiority, strike or multirole missions to contribute to ASW operations. If the program progresses as planned, it could help create a more distributed and flexible carrier-based anti-submarine warfare architecture for future high-intensity maritime operations.