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On the principle of results being proportal to effort, here how I propose we split up the designs:

Boat A: A decent Fast Attack Craft that's mostly there to pad out a SAGs missiles count in a cost effective manner. We don't need to go high tech here. 300t.
Boat B: A 6000t FREMM style frigate with a stealthy tumblehome hull and VLS. Lots of upgrade potential in the future and lots of use case both domestically and in the export market, so let's make it nice.
Boat C: Offshore Patrol Vessel. Coast guard shit. Make it cheap and reliable within it's mission parameters. Shares a hull with boat D but omits the expensive stuff.
Boat D: A coked up version of the Italian Lupos, that provides the best bang for buck value in a hull that size (3000t). Another export ready design I expect to sell like hotcakes to CyPac.
Submarine E: AIP boat, Italian style compressed oxygen gas torus pressure hull, but with LK-99 based SMES. We eat the lower energy density because or energy storage can mass as much as our old chemical AIP plant and our hull combined

Edit: RTSC (room temperature superconductor) also makes some kind of hybrid electric propulsion much more attractive, especially on the Bs and Ds.

Ngl some of the examples look so derpy. @HeroCooky can we assume in-universe that we made these look badass or something? :V

I'm fond of having three-fin Hobby Mirage Style drives on each side of a sub, with waterjet tipjets and brown flaps to increase L/D and reduce the necessary torques.
They'll certainly look very alien.

Is a flipper quieter or something

IN THEORY yes, because you're moving more water across a smaller velocity gradient that generates less flow noise, and they lack the distinctive acoustic signature of screws so our enemies would have to redo a bunch of their filtering algorithms from scratch.

It practice IRL it seems unlikely that flippers would scale to the power levels needed to propell a warship, but who knows. Biomimetic propulsion hasn't received a lot of funding as a field.

I'm certainly going to try to come up with some plausible sounding guesses about how they'd be implemented at these scales.
 
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I forgot what does LK mean on the submarine I forgot
LK-99 is a possible (but currently seeming unlikely) room temperature superconductor that's been trending recently due to the media getting excited by the early draft of a research paper that got posted on a site for pre-peer-review articles. If it turns out it can actually exhibit RTSC properties, it'd be transformative to almost every field that works with electricity because it's literally just a lead-apatite-copper crystal, and room temp superconducting is a holy grail of sorts.
 
currently in the "we're so back!" phase, but it has been oscillating for a while. Even if it isn't a superconductor it's still a pretty decent diamagnetic material
 
the reaction of the guangchou military marine department must have been marvelous when they heard the news of the new boats after decades of using poorly remilitarized fishing boat wrecks.
 
the reaction of the guangchou military marine department must have been marvelous when they heard the news of the new boats after decades of using poorly remilitarized fishing boat wrecks.
Oh, they didn't have any boats. You literally had to re-found the navy, you did that as an Action way back at the start of the Quest.

Underwear was changed the day you announced four new boats and one sub designs were to enter service.
 
Yeah, that needs to be retconned HC.

There's no fucking way we would even have the institutional capacity to even build ships and submarines AT ALL if that was the case. Shipbuilding is a use it or lose it capability.

I could see us getting second hand Soviet designs that we built native versions of at bottom dollar prices, but there's no way we have nothing.
 
Yeah, that needs to be retconned HC.

There's no fucking way we would even have the institutional capacity to even build ships and submarines AT ALL if that was the case. Shipbuilding is a use it or lose it capability.

I could see us getting second hand Soviet designs that we built native versions of at bottom dollar prices, but there's no way we have nothing.
*Quickly shoves all that into the Guang Merchant Marine, while also making it a distinct branch from the Guangchou Navy, so I can still have my joke.* :V

But ye, sorry for the confusion/hol' up caused by my attempt at humor. If it ain't possible, I ain't making it canon. I am a wordy word person, not a facts and logic one, so please keep pointing out stuff that really shouldn't make sense.
 
so please keep pointing out stuff that really shouldn't make sense.
Flippers requires a vessel to be mostly submerged. A ship using them as propulsion won't ever be competitive in speed or range with contemporary naval craft. Also I think the square/cube stuff means that assuming constant density of a craft the surface area scales to a power of the displacement?

Edit: To clarify the above: Flipper propulsion may mean that the vessel has an electrical layout or novel watertight system 8 years ahead of our competitors but it's probably going to top out at 1/2 the speed and/or horrifically unstable. The primary goal of flippers is stealth, they'd be suitable for say, special forces insertion vehicles. Not submarines. Or at least not *manned* submarines. A UUV would work.

Edit2: Also if we're exporting ships and boats then Cypac has to get the monkey model. We aren't selling to the nations known for how tight their technology export regimes are. NATO will 100% get whatever makes our ship's contemporary or ahead and integrate it into their designs. I'm kind of assuming that we're successfully indoctrinated the population by using civil rights so they aren't going to leak stuff on purpose to people who are something like 4 administrations past desegregation.

Edit3: Oh, and we're not going to recover the sunken fleet to put the ships back into service. That's a lot of pre-bomb steel down there for MRI machines and the like.
 
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Yeah, I've never said that if you pursue FP, it won't have wonk or be god-tier, even with your rolls. FP being faster than conventional methods was never something I would have allowed, but stealth is due to being an utter curveball for everyone on Earth.

Also, I have even added what levels your designs would be if you don't try to re-invent the wheel via flippers here, so people can make their own spins on designs offered by others or make their own during the three day moratorium.
Oh, and we're not going to recover the sunken fleet to put the ships back into service. That's a lot of pre-bomb steel down there for MRI machines and the like.
That action is pure propaganda, political move, and morale boost. You're gonna put what you can into museums, naval bases as monuments, and use the rest of the materials as the components of statues for those lost in service to the revolution.
 
as long as it also gets decent milage and an okay-ish top speed I am fine with flipper subs because much like mechs sometimes your setting can have cool shit as a treat
 
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