Updated: originally posted 22nd June 2018.
Many thans to unnamed others, without whom this article would not have been possible.

'Deep Shadow' Swimmer Delivery Vehicle revealed
Flag CABI Cattaneo of Milan, Italy, are one of the world’s foremost producers of underwater vehicles and heavy equipment for special forces. But they are virtually unknown outside the close-knit Submarine & Special Forces communities. Until a couple of years ago the secretive nature of their primary customer has meant that their products are for the most part completely unreported. That changed at the Seafuture 2016 show in La Spezia when the company started to court export customers with their Deep Guardian Special Forces Hangar. Now at Seafuture 2018 they have revealed a number of other products including the Deep Shadow SDV.

Deep_Shadow_SDV Covert Shores

The Deep Shadow carries six combat swimmers and is roughly analogous to the US Navy SEALs’ SDV Mk.VIII series. Payload bays are situated fore and aft and four thrusters allow hovering and exact maneuvering. Its streamlined hull allows a comparatively high yet undisclosed cruising speed.

Deep_Shadow_SDV Covert Shores

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Deep_Shadow_SDV Covert Shores
Deep_Shadow_SDV Covert Shores
Photo credit Mariasole BIANCO

Italy essentially invented the modern art of underwater sabotage using combat swimmers, using it to great effect in World War One. And more famously during World War Two, when Italian frogmen riding the SLC ‘Maiale’ (’pig’) sunk a number of Allied vessels including the battleships HMS Queen Elizabeth and HMS Valiant. The capability was reestablished soon after the War but has been kept very secret since. CABI Cattaneo going public with their export designs is thus a rare window into this world.

Deep_Shadow_SDV Covert Shores

Although this is an export design it is a strong indicator of Italian Special Forces SDV capabilities. COMSUBIN (aka Incursori) are known to operate SDVs, submersible boats (also produced by CABI Cattaneo) and Rotinor Black Shadow diver propulsion vehicles in addition to RHIBs and other craft.

Deep_Shadow_SDV Covert Shores
The Italian Navy has done a good job of keeping the exact details of its SDV capability out of the public eye. SDV cradles have been observed on some Italian submarines however.

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The SDV cradle on Italian Navy U-212 Class submarine S-527 Scirè at La Spezia. From with SDV illustrated by H I Sutton, Covert Shores

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