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Who needs sailors anyway?


The launch platform was a 20 m sail-powered Saildrone Surveyor with solar cells and diesel auxiliiary designed for long range, long endurance operations.

 

Saildrone has produced and operated a total fleet numbering over 136 uncrewed surface vehicles (USVs) globally.

Fleet and Production Overview

Total Vehicles: The active Saildrone fleet surpassed 136 autonomous vehicles with broader manufacturing milestones targeting upwards of 100 to over 130 built over recent years.

Current Production Rate: The company actively builds mid-size Voyagers at a rate of one per week and large-size Surveyors at a rate of one per month.

European Expansion: Saildrone recently expanded manufacturing to international shipyards in the Netherlands, Norway, and Poland to meet growing defense demands.
 

425-pound drone submarines are coming out of a former marble showroom in South Philadelphia at 75 a year, 8 feet long, carrying a 250-pound warhead 1,000 nautical miles on a 30-day charge, and the first one went together on a kitchen table​


The size becomes immaterial, as does the distance and the charge.

The miracle bit, that applies to any subsurface craft is the ability to navigate long distances, independently, to a target.
 
30 Day engines accredited by the USN


1900 kW Series 2000 MTU
4300 kW Series 4000 MTU
 

Containerized systems for unmanned RIBs

"Potential payload cassettes include loitering munitions, miniature torpedoes, Unmanned Aerial Vehicles (UAVs), sonobuoys and other mission-specific equipment, all delivered from the same core platform.

"The payload cassette system has already supported the successful integration of the Anduril ALTIUS loitering munition, demonstrating MARS’ ability to rapidly integrate and deploy new effectors through a simple cassette exchange without modification to the vessel itself."
 
Flying USVs...

It flies to position, lands, then powers down and loiters on the water for weeks.

 
92% availability vs 30%. USV vs crewed vessels.

"Saildrone ran four Voyager uncrewed vessels for the Danish Ministry of Defence Acquisition and Logistics Organisation and published the tally in February. Across six months the four boats logged over 170,000 unique vessel detections, covered more than 20,000 nautical miles and kept fleet uptime at 92%.

"The comparison Saildrone drew is the part that gets a defense ministry’s attention. A crewed warship spends closer to 30% of its service life actually available for duty, because hulls need dockyards and sailors need to go home."


The Danes are now building their own.

" a sensor mast that travels on a trailer "​


A 10m boat with "a Terma radar that can be tied into existing coastal radar to push coverage over the horizon, a Teledyne Marine passive acoustic array for listening underwater, and a MyDefence counter-drone system" that can be deployed by a pichup and trailer and launched anywhere.

"Denmark’s 2025 fleet plan already committed to a development program for uncrewed naval systems, and Danish startups are attacking the same coverage problem from other directions. One Copenhagen company raised a €1 million pre-seed in July to scatter passive microphones across the seabed and listen for saboteurs instead of chasing them."

....

Marry these up with NSMs on Bushmasters and PrSMs on HIMARS, together with UAVs and the littoral starts stretching a long way off shore.

With minimal manpower employed and at risk.
 
Well, Robot towed by a big fat manned vessel to drone RAS.

Let's not let details get in the way...

How fast can that crewed vessel complete a RAS of a USV? How many USVs can it refuel concurrently? How big a USV flotilla can it support and for how long? What is the range of the USV's? The endurance? Does the mothership have to be crewed? Does it have to be big?

And tomorrow's answers will not be the same as today's because one bright idea spawns another and the innovators are being given free rein.
 
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