Drone threats to commercial shipping.
Commercial vessels transiting the Gulf are being approached by small unmanned aircraft and explosive unmanned surface craft. A bridge team cannot engage either one. What they can do is see it early enough to maneuver, muster, stop a fueling operation, and call the naval authority that does have engagement rights. That is a sensing problem, and it is the one part of this that a commercial operator can legally solve on their own hull.
The Strait of Hormuz has been closed to normal traffic since February.
Iran has restricted passage through the strait since 28 February 2026, following the outbreak of open conflict with the United States and Israel. Reporting since then describes IRGC warnings against transit, boarding and attacks on merchant ships, sea mines laid in the strait, drone strikes on commercial vessels, and explosive unmanned surface craft used against oil tankers. Roughly a fifth of global seaborne oil moves through that water.
Small unmanned aircraft
Suspected Iranian drones have struck commercial vessels in and around the strait. A quadcopter approaching a tanker at night gives a bridge team no radar return worth the name and no acoustic warning until it is close.
Explosive surface craft
Unmanned surface vessels loaded with explosives have been used in at least two attacks on tankers in the region. They run low, small, and fast, and they are hard to separate from legitimate small-boat traffic on a marine radar.
One-way attack drones
Shahed-class munitions have been fired at targets across the region. These are Group 3 aircraft, considerably larger and faster than the Group 1 threat our interceptor was designed against, and defeating them is a naval air defense mission rather than a shipboard one.
Threat picture compiled from open reporting current to July 2026, sourced at the bottom of this page. Conditions in the strait change quickly. Nothing on this page should be read as operational guidance, routing advice, or a threat assessment for a specific transit.
Scope.
A defense company that answers every threat on a list with the same product is selling, not engineering. Our system was built against a specific target class. Here is exactly where it applies at sea and where it does not.
| Maritime threat | Class | Our detection | Our effector | Position |
|---|---|---|---|---|
| Small quadcopter or FPV drone | Group 1 | Applies | Applies | The threat the system was designed against |
| Fixed-wing surveillance UAS | Group 2 | Applies | Partial | Detection holds. The interceptor optic is short on look angle for crossing geometry at this class |
| Shahed-class attack munition | Group 3 | Applies | Does not | Outside the characterized envelope. We have no vulnerability model for a 200 kg airframe and will not claim a kill |
| Explosive unmanned surface craft | Surface | Partial | Does not | Radar and thermal can detect a small surface contact. The interceptor is an air-to-air round and is not a surface weapon |
| Anti-ship missile | Missile | Does not | Does not | Naval air defense mission. Not our system at any maturity |
| Sea mines | Subsurface | Does not | Does not | Not addressed |
| Small-boat boarding party | Surface | Partial | Does not | Early warning value only. Response is a security and naval matter |
The conclusion that follows from the table
Detection covers five of seven rows. The effector covers one and a half. On a commercial hull the sensing product is the product, and that holds even before the legal question in section 04.
Our interceptor remains a Government offering against Group 1 threats, and the natural maritime customer for it is a naval force with its own engagement authority, not a merchant operator.
Archer Watch at sea.
Archer Watch is our carrier with the launch rail removed. The thermal channel is entirely passive, which matters on a vessel that does not want to advertise a defensive fit, and the radar runs at automotive power levels rather than at naval search power. It publishes tracks to whatever bridge or security system the operator already runs.
Thermal sees what marine radar misses
A small drone over water returns almost nothing to a navigation radar tuned for surface contacts and sea clutter. An uncooled long-wave imager detects it on thermal signature in full darkness with no illuminator and no emission.
Detects by shape and motion
A Group 1 drone runs only 5 to 20 degrees above ambient, so thermal contrast alone is a weak discriminator. Our chain classifies on shape and motion signature instead, which is what separates a drone from a gull at range.
Two channels, one track
Radar supplies range and closing velocity, thermal supplies angle, and a filter fuses them into one track. If sea state or humidity degrades one channel, the other carries at reduced performance rather than dropping the contact.
No weapon aboard
Nothing in the fit is a munition, an energetic, or a firearm. That is what allows it onto a commercial hull at all, and it is the single largest practical difference between this and every effector product marketed to shipping.
Minutes, not seconds
Warning time is the whole deliverable. Enough margin to alter course, sound general alarm, secure a fueling or lightering operation, and get a report to the naval authority coordinating the transit corridor.
Fleet-common fit
One sensor head, one cable, one track interface across a fleet, so a shore operations centre sees the same picture from every hull rather than a different vendor's output per vessel.
What is not done
No marinized article exists. Salt fog, shock, vibration, and electromagnetic compatibility qualification to IEC 60945 or the equivalent military standard is scoped and not performed. Detection ranges over water, where humidity attenuates long-wave infrared and the sea surface changes the thermal background, are modeled from a land background and have not been measured at sea.
A vessel operator evaluating this should treat it as a development programme with a named qualification path, not as a catalogue item.
The legal constraint.
This is the part of the maritime counter-drone conversation that most vendors skip, and it decides the product. Armed systems aboard commercial vessels sit under flag state law, port state control, and the national law of every jurisdiction the hull enters. Engaging an aircraft is a further step again, and it is not a decision a master is empowered to make.
An effector creates four problems
Flag state authorization for a weapon aboard. Port state control on every call. Export licensing for a guided munition crossing borders. Rules of engagement that no commercial master holds.
Each one is solvable for a naval customer and none of them is solvable for a shipping line on a commercial schedule.
A sensor creates none of them
A passive thermal imager and a low-power radar are not weapons under any of those regimes. The fit is a navigation and security aid, it carries no munition, and it ships as ordinary commercial equipment.
The warning goes to the crew and to the naval authority coordinating the corridor. The shot, if there is one, is taken by someone with the authority to take it.
This describes our product position and is not legal advice. Flag state and port state requirements vary and an operator should take their own counsel on any equipment fit.
Ashore.
Every constraint that shapes the shipboard product applies at a commercial site ashore. No engagement authority, an existing security system to feed, and a need for warning rather than defeat.
Ports and terminals
Container and tanker terminals with crane operations, fuel transfer, and a perimeter that is legally open on the water side.
Offshore energy
Platforms and floating production units with helicopter traffic, flare stacks, and no practical perimeter at all.
Airfields
Detection and classification of small unmanned aircraft near approach and departure paths, handed to the authority that manages the airspace.
Critical infrastructure
Substations, refineries, and data centres where an intrusion is a reportable event and warning time is the whole response.
Border and coastal
Persistent detection along a coastline or a border segment, feeding a track picture to an operations centre rather than to an operator on site.
Naval customers
The one maritime customer for the full system. A naval force holds engagement authority, operates under military rather than commercial regulation, and can use the kinetic layer.
Sources.
We cite the reporting behind the claims on this page rather than asserting a threat picture and asking you to take it on faith.
Open reporting, retrieved July 2026
- 2026 Strait of Hormuz crisis. en.wikipedia.org/wiki/2026_Strait_of_Hormuz_crisis
- 2026 Strait of Hormuz campaign. en.wikipedia.org/wiki/2026_Strait_of_Hormuz_campaign
- Sea drones target oil tankers in the Middle East as conflict risks widen. aol.com/articles/sea-drones-target-oil-tankers
- Tensions continue to escalate in the Strait of Hormuz as three commercial ships attacked. aol.com/articles/attacks-strait-hormuz-intensify-iran
- West Asia conflict enters twelfth day, Strait of Hormuz faces growing threats. newsonair.gov.in
Martel Defense has no independent reporting from the region and no proprietary intelligence. These are secondary sources and are cited as such.