H I Sutton

About H I Sutton

H I Sutton is a writer, illustrator and analyst who specializes in submarines and sub-surface systems. His work can be found at his website Covert Shores.


Recent Posts By the Author


U.K. Royal Marines Want to Acquire Autonomous Hybrid Surface, Subsurface Stealth Vessel

U.K. Royal Marines Want to Acquire Autonomous Hybrid Surface, Subsurface Stealth Vessel

Concept illustration for a shipping container-sized underwater H I Sutton Illustration

Britain’s Ministry of Defense (MoD) has issued a pre-procurement notice for a unique type of vessel to help the Royal Marine Commandos. The document outlines an ‘uncrewed surface and subsurface vessel’ (USSV). The vessel must be multi-payload, have a low signature, and long endurance, according to the notice. Read More

Two Iranian Warships Spotted Near English Channel

Two Iranian Warships Spotted Near English Channel

H I Sutton Graphic

Two Iranian warships are nearing the English Channel, according to satellite photographs reviewed by USNI News. The ships are thought to be headed to the Baltic Sea to represent Iran in a July 25 naval parade off the coast of St. Petersburg to commemorate the 325th anniversary of the Russian Navy. Read More

Chinese Military Surveillance Ship, Aircraft Spotted at Contested South China Sea Reef

Chinese Military Surveillance Ship, Aircraft Spotted at Contested South China Sea Reef

Chinese surveillance assets at Fiery Cross Reef on June 9, 2021. Maxar Image used permission

As the U.S. attempts to pivot its national security focus to the Pacific, the situation in the South China Sea continues to grow more complex. China claims almost the entire area as its own and has running territorial disputes with nearly all of its neighbors, while tensions remain high in part due to the presence of a more aggressive People’s Liberation Army Navy. Read More

UPDATED: Iranian Warship Thought to be Headed to Venezuela Left Port with 7 High-Speed Missile Boats Aboard

UPDATED: Iranian Warship Thought to be Headed to Venezuela Left Port with 7 High-Speed Missile Boats Aboard

USNI News Photo Illustration. Satellite image ©2021 Maxar Technologies used with permission

This post has been updated with a statement from the Pentagon and the Iranian Foreign Ministry.

An Iranian Navy ship thought to be bound for Venezuela left its port in late April with seven high-speed missile-attack craft strapped to its deck, USNI News has learned. Read More

New Photos Reveal Details of Cuba's Tiny, Lethal Attack Submarine

New Photos Reveal Details of Cuba’s Tiny, Lethal Attack Submarine

Undated photo of Cuban submarine Delfin. Marina de Guerra Revolucionaria Photo

Like most of the Cuban military, the country’s Navy is characterized by inventive recycling of Soviet-era hardware. Modern systems are rare, but there are systems that are unlike anything you will see in other countries’ fleets. The Cuban fleet has fishing trawlers remodeled into warships and torpedo launching platforms that resemble party rafts. But perhaps the most dangerous platform is Cuba’s secretive, tiny submarine. Read More

Iran’s New Missile Corvette Could Reshape IRGC Naval Doctrine

Iran’s New Missile Corvette Could Reshape IRGC Naval Doctrine

An aritsits rendering of a Shahid Soleimani-class missile corvette. HI Sutton image used with permission

Iran’s Islamic Revolutionary Guard Corps Navy (IRGC-N) is building a new class of warships, as first reported in Naval News last week based on satellite imagery. The catamaran design appears relatively large, modern and capable compared to existing IRGC commercial-based designs. Read More