August 4, 2024: American military analysts believe that the successful Ukrainian use of UAVs (Unmanned Aerial Vehicles), and USVs (Unmanned Surface Vessels) against Russia in the Black Sea provides a realistic solution to the problems Taiwan faces in defending itself against an attack by the Chinese navy. As a major supplier of military aid to Ukraine, the Ukrainians share details of their experience with new weapons against the Russians. The problem is that the United States refuses to adopt the Ukrainian designed USVs and instead sticks with similar, but much inferior, systems developed in the United States.

Among the U.S. Navy-developed USVs is the Remus 100 that the navy successfully used in the Persian Gulf during 2008. Remus 100 is a 37 kg vehicle that looks like a small torpedo. It is 1.6 meters long and 190mm in diameter. Carrying side-scanning sonar and other sensors, a Remus 100 can stay underwater for 22 hours, traveling at a cruising speed of five kilometers an hour. Top speed is about nine kilometers an hour. Remus is actually a UUV (Unmanned Underwater Vessel) that can operate up to 100 kilometers from its operator and dive up to 100 meters. The UUV keeps costs down by using GPS, in addition to inertial guidance. The UUV surfaces every hour or two to get a GPS fix, and then goes back to doing what it was programmed to do. Ukraine could use them to find and eliminate Russian bottom mines in shallow coastal waters but that has not been a problem for Ukraine because the Russians have already been defeated by Ukraine designed and manufactured USVs.

Worse, the U.S. proposed Remus 100 was designed mainly for civilian applications like inspecting underwater facilities, pollution monitoring, underwater survey, or search. In theory there are similar military and police applications, notably searching for naval mines. Russia did try to use naval mines, the floating kind, not the ones that lie on or are chained to the sea bottom. Russia tried to block Ukraine from importing or exporting goods via their main port of Odessa, which is in western Ukraine near the costs of NATO members Romania and Bulgaria. Those mines were cleared in 2023 using conventional methods, plus the USVs that forced the Russian navy to move over a thousand kilometers away, to the distant Sea of Azov in the northeastern portion of the Black Sea. Even there, Ukrainian USVs continue to threaten and attack Russian warships taking refuge in ports there. The Ukrainian USVs prevent Russia from importing or exporting any goods via the Black Sea route.

Remus is not an offensive weapon, which the Ukrainian designed USVs are, and it was with these USVs that Ukraine defeated the Russian Black Sea fleet. That was quite an accomplishment for a country that does not have a navy. The Russians were not only defeated, but they were also humiliated.

If the United States wants to give Taiwan useful advice and assistance, they must adopt what worked for the Ukrainians, not try to create something new that can be described as made in America.

Currently the US Navy established USVRON (Unmanned Surface Vessel Squadron) 3 at a navy west coast base. The squadron operates USVs known as GARCs (Global Autonomous Reconnaissance Craft). These are small, 1.6 ton, 4.8 meter long USVs with a top speed of 65 kilometers an hour. Range varies depending on cruising speed. At 54 kilometers an hour max range is 750 kilometers. At 11 kilometers an hour the range is 1,300 kilometers. GARCs are designed to handle 2.5 meter waves and moderate winds. Any more than that and a GARC will be blown off course until the seas return to normal.

GARCS were developed to carry out reconnaissance and surveillance missions and transmit their video images back to another ship or land station for a human operator to monitor if needed. GARC can also carry sonar and use that to detect submarines. Any contacts are reported to a warship which can then use anti-submarine torpedoes or dispatch helicopters equipped with one or more anti-submarine torpedoes. GARC is also well suited to detecting and destroying naval mines.

GARC’s autonomous behavior and sensors make it ideal for port patrol and identifying and reporting any actual or potential threats. GARCs have been successfully used this way in the Persian Gulf to protect ports where American ships are berthed.

In addition to GARC and Remus, there are several other autonomous vessels including surface and underwater craft that can spend months at sea monitoring and recording conditions. These vessels include surface vessels like the 7 meter long Saildrone Explorer that stay at sea for a year while moving along at a speed of 5.6 kilometers an hour. Speed depends on how much wind there is because Explorer actually has a small sail. This includes conditions underwater, which are valuable to submarines, especially USN nuclear submarines that remain underwater for months at a time.

What the U.S. Navy has not been able to produce are the cheap, effective, armed UAVs and USVs the Ukrainian used to cripple the Russian Black Sea Fleet. The problem is situational and political. The American situation is peacetime, not wartime. When you are at war things are done quickly, effectively, and inexpensively. Ukraine demonstrated that with its domestic UAV and USV programs.

In the United States peacetime defense procurement is a lot more expensive and takes longer than it would in wartime. That means the Ukrainian type UAVs and UUVs will cost the USN far more than the Ukrainian models and take years to reach the U.S. Pacific Fleet. If China goes to war over Taiwan, that situation will change overnight. Meanwhile you go to war with what you have when war is declared. Right now the American navy has none of those clever and effective Ukrainian UAVs and USVs. Keep in mind that it took the Ukrainians over a year after the Russian invasion to come up with their brilliant and effective UAV and USV designs and tactics that crippled and defeated the mighty Russian Black Sea Fleet.

The United States knows what Ukraine did in the Black Sea but that knowledge does not quickly translate into similar American weapons. The primary problem is so few American naval commanders understand exactly what the Ukrainian did and how to replicate that for the American Pacific Fleet, where such Ukrainian technology is needed.