71M Sentinel

A large luxury yacht on the water with three helicopters flying nearby, and mountains in the background during sunset.
Gold and white award badge with text recognizing a 2026 Nominee for the Yacht and Aviation Design Award, Sentinal, and noting it is shortlisted in the International Yacht & Aviation Awards 2026 by design et al.
Table displaying the principal dimensions of a catamaran, including platform as Lloyd’s register +100A1 SSC support, overall length 72.93 meters, waterline length 71.37 meters, beam 18 meters, in white and olive green colors.
Table listing capacities, crew, staff, and construction material for a marine vessel, made of marine grade aluminum.
Table titled 'Propulsion and Performance' with specifications such as cruising speed 13.0 knots, maximum speed 21.5 knots, range 5,000 nautical miles at 13 knots, two main engines, power 2 x 2832 KW, propulsion with two CP propellers, two generators of 250 KW each, fuel capacity 200,000 liters, and fresh water capacity 10,000 liters.

A Mobil Perimeter of Assurance

In the world of ultra-high-net-worth ownership, freedom is inseparable from security. The Sentinel concept from Shadowcat® redefines that balance; a bespoke, catamaran-based support vessel designed to create a mobile perimeter of protection while maintaining the serenity and discretion of superyacht life. Conceived in collaboration with international security specialists Allmode, Sentinel integrates structural resilience, operational intelligence, and human capability to safeguard owners and their entourages wherever their voyages lead.

A large luxury yacht with helicopter pads on the deck, surrounded by smaller boats in calm water.

Sentinel’s twin-hull architecture offers exceptional volume and stability, enabling a range of mission profiles. Dual, certified, helipads allow simultaneous operations for transfer, support, or emergency extraction. Beneath expansive decks, the vessel accommodates submersibles, tenders, sportfishing craft, and terrestrial security vehicles, including armored SUVs and ATVs. All are deployable via Sentinel’s hydraulic launch system on any coastline or urban quay.

Large luxury yacht on the water with a small motorboat speeding nearby and four drones flying above against a backdrop of mountains and cloudy sky.

Protection is built into Sentinel’s framework rather than added later. Critical compartments and stairwells are reinforced with ballistic shielding, while secure operations centers and shielded communications hubs provide control and coordination. Counter-surveillance systems, calibrated for different operating regions, safeguard electronic and digital privacy. An integrated citadel offers a secure refuge for owners, guests, and crew, designed for multi-hour endurance and communications resilience. Drone docking bays maintain a constant overwatch and connect directly to encrypted data systems synchronized with the mothership.

A luxury yacht on the water with two helicopters flying above it, with mountains in the background under a partly cloudy sky.

From a distance, Sentinel presents as a striking, modern support yacht — refined, quiet, and composed. To those within its operational framework, it is much more: a guardian platform that merges discretion with preparedness. It protects people, information, and assets across sea, air, and land while remaining invisible to the untrained eye.