U.S. Military Strategy Against Iranian Fast-Attack Vessels

The United States is gearing up to address threats from Iranian fast-attack boats, adopting strategies previously used in operations against drug trafficking in the Caribbean and Eastern Pacific.

Since September 2025, U.S. forces have conducted numerous lethal strikes on suspected drug-trafficking vessels, as part of a wider military initiative targeting cartel operations. This approach has provided insights into the U.S. military’s capabilities when dealing with small, agile maritime threats.

Now, officials hint that similar tactics could be applied to confront Iranian vessels in the Strait of Hormuz.

President Donald Trump made a pointed statement on Truth Social, stating that any Iranian craft that gets too close would be “immediately eliminated using the same killing systems we use against drug traffickers on our boats at sea… It will be swift and brutal.”

Since launching this operation, U.S. Southern Command has executed attacks resulting in over 160 fatalities and the destruction of numerous vessels. These actions rely on coordinated surveillance, quick targeting, and precise strikes—skills that could also come into play in the Gulf.

However, there are significant distinctions in the scenarios. In the Caribbean and Eastern Pacific, U.S. forces focus on non-state actors with limited defensive capabilities. In contrast, Iranian forces are organized, armed, and operate within a critical maritime corridor.

Engaging with state-sponsored military forces in the Gulf increases the stakes considerably.

The Trump administration’s blockade of Iranian ports, which commenced recently, has positioned U.S. forces closer to Iran’s fleet of fast attack boats, many of which have endured weeks of previous assaults.

Assessments indicate that operations involving the U.S. and Israel have significantly affected Iran’s conventional navy, reportedly sinking over 155 ships in the process.

Yet, Iran’s maritime threat looks markedly different from what has already been decimated. Much of the focus has historically been on smaller, faster ships rather than larger surface vessels.

Farzin Nadimi, a senior fellow at the Washington Institute for Near East Policy, emphasized the need to consider the sheer number of Iranian maritime assets, estimating that their fast attack craft could total between 3,000 to 4,000, some of which are equipped with anti-ship missiles.

These vessels are often dispersed along coastlines, protected within reinforced complexes, or even concealed in civilian areas, enhancing their challenge for adversaries.

Mobility, stealth, and fortified infrastructure make targeting these fleets much trickier than conventional naval assets.

Furthermore, Iranian tactics are evolving, incorporating strategies aimed at complicating detection and engagement, like dispersion and deception, alongside potential drone use.

The Strait of Hormuz narrows at one point to about 20 miles, funneling all kinds of boats into predictable lanes and creating a complex navigation environment for various types of maritime traffic.

Currently, it seems Iran is taking a defensive stance. They appear to be focused on safeguarding their assets from U.S. surveillance, which involves limiting movements and keeping a low profile. Nevertheless, as negotiations stall, this cautious approach may change.

Any encounters could escalate quickly as Iranian speedboats navigate closer to both U.S. and commercial vessels.

The U.S. military places great emphasis on surveillance to monitor activities along the Iranian coastline, aiming to detect potential threats before they reach open waters.

In some scenarios, this could mean intercepting vessels well before they reach critical zones.

These Iranian speedboats, unlike smuggling vessels, are part of a state military and may be outfitted with defensive systems like anti-ship missiles and shoulder-launched air defense systems.

Nadimi notes that many could carry systems like MANPADS, which target aircraft and pose additional risks.

The Strait of Hormuz is a vital shipping route, so even minor disruptions can have significant repercussions on global energy markets.

With Iran’s fleet largely intact and the U.S. tightening its blockade, the upcoming naval dynamics could hinge on a speedy confrontation at sea.

So far, Iran has not publicly reacted to Trump’s remarks about potentially using counternarcotics strategies against their vessels, while a ceasefire remains in effect as both nations work towards a long-term peace agreement.