Singapore_Navy_Relies_on_MARSEC_USVs_to_Ensure_Surveillance_of_Strait-8dc9d4ca.webp
 


Follow on UK program to that:

Say hello to the 40 meter long Type 92 sloop USV and the Type 93 UUV for ASW coverage of the GIUK gap. By the sound of things, the Type 92 sloop will be smaller than the Netherlands AAW oriented MSS. Think Damen 4008 rather than the bigger 5009. Maybe a Swath hull but I'm bettering on the black painted XV Patrick Blackett as a trials ship.

The map/info graphic depicts the deployment of 3 of 8 Type 26 frigates, 2 of 7 Astute SSNs along with 9 Type 92 sloops and a stunning 14 Type 93 UUVs.

 
Details of Project CABOT were communicated to industry in an early market engagement notice published by the Ministry of Defence (MoD) on 13 February. According to the notice, the aim of the project – which builds on outputs from Project Charybdis and the NATO ASW Barrier SDI – is to develop and field “a portfolio of lean crewed, remote operated and uncrewed/autonomous airborne, surface and sub-surface vehicles, sensors and nodes to provide a deployable and persistent wide area ASW search capability”.
 


 
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Pardon the late reply.
Inside Defense reported Dec 20 that Navy had completed Congress mandated unattended testing of 720 hours, 30 days, on six propulsion systems for USVs, would appear all diesels, last two reported were Caterpillar and MTU, no GTs ?
GTs are really expensive, and don't necessarily offer a lot of advantages over a diesel if you don't need pure speed.
 
Pardon the late reply.

GTs are really expensive, and don't necessarily offer a lot of advantages over a diesel if you don't need pure speed.

In fact I can’t think of a non naval GT ship: they are only useful for acceleration and top speed; otherwise a diesel beats them hands down.

ETA: in a USV application, the lower maintenance and fuel costs and the lack of need for top speed in a tactical formation (sprint/drift, etc) would clearly drive a diesel solution, IMO.
 
In fact I can’t think of a non naval GT ship: they are only useful for acceleration and top speed; otherwise a diesel beats them hands down.
They show up in unlimited race boats/hydroplanes, and the occasional offshore powerboat owned by someone with even more money than the usual money:brains ratio of those folks. You know, people who have a higher money:brains ratio than Jay Leno does.


ETA: in a USV application, the lower maintenance and fuel costs and the lack of need for top speed in a tactical formation (sprint/drift, etc) would clearly drive a diesel solution, IMO.
Agreed, I'd expect some medium-speed diesel in these, like a big Caterpillar or maybe Scania. Whatever that big Scania 700+ wheel horsepower monstrosity is.
 
A lot of passenger ships, Like the Queen Mary 2 comes to kind by recall a few others, use Gas Turbines as supplement power boosters due to their high power densities.

With them often being in the stacks ontop.
They're also extensively used for power generation on oil & gas platforms, because they run very happily on fuel that's freely available, and which in some cases is actually a waste product.

There were a number of high-speed ferries with gas turbines, which were enormously fast and commensurately expensive to run. There's a reason they don't run any more.
 

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