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Premium Proposal: HSMS Tre Kronor, T7 CL

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638 posts
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Hello everyone. I occasionally write some ship proposals of ships i'd love to see in the game, and today i'm going to do over HSMS Tre Kronor, a late-war Swedish Light Cruiser.


HP: 27,300

Armor: 20-25mm belt+70mm vitals (citadel)

Turrets 125/30/80/50 F/S/B/R
130mm total deck (30mm outer)
127mm conning tower

16mm plating

13mm superstructure

Source: Conway's fighting ships 1922-1948

27,300 is very low for T7 cruisers and isn’t great even against T6 cruisers either. The citadel does stick a fair bit above the waterline, according to this blueprint (7819x2906, had to photoshop 2 pages together), so you’ll have to use your rudder shift and to try and avoid incoming fire. The turrets themselves are quite well protected as well.


Length 182m
Beam 16.45m
SHP 90,000
Speed 33kts
Rudder Shift: 4.9s
Turning Circle: est 670m


With a maneuverable rudder, you should be able to bob and weave between enemy shells pretty well, considering you have a high effective range. Still, be wary of overmatch.



1x3 152mm/53 Bofors model 1942

2x2 152mm/53 Bofors model 1942


10 rpm (70rpm from all guns)

MV: 900mps

TT: 20 deg/s

IN GAME RANGE: 16.3 km (~10.5s shell travel)

Firing Angles: 30 degrees front and rear, 360 degree traverse


These guns are comfy. 360 degree traverse, and a very fast traverse speed, AND gun angles that allow you to stay in autobounce range should make a very comfortable experience. The 6s reload is also quite nice at this tier.


3200 AP Alpha

Shell weight: 45.8kg

AP Krupp: 2280

Drag: .348

224,000 (336,000) AP DPM

Fuzes: Standard

AP flight time and pen would be comparable to Duca Delgi Abruzzi (pen difference <15mm at nearly all distances, time to target within ~.7s to max range

*note: couldn’t find an AP shell for this gun, so I played create-a-shell with supercontroller9 using the noted HE and AA muzzle velocities, and the similar characteristics to Italian cruisers, but Krupp and drag are values that are often used for balancing, rather than for historical performance.


As you can see, the performance is very similar to the Italian 152mm guns currently in game.



2200 HE Alpha

HE: 45.8kg

*Similar weight to USN 152/47 HE shell*

Fire Chance: 11%

HE flight time would be better than USN at all ranges (11.3s to 16km compared to 14.1 for USN 152mm/47)

154,000 (231,000) HE DPM

Krupp: 1100

Drag: .348


154,000 is on the low side for T7 cruisers- this is, after all, the tier with Boise and Helena. However, this is workable for one reason…….

Well, I won’t spoil the surprise just yet. It’s coming though.

Displaying IMG_4465.JPG

This is the parabolic table for this gun (in Swedish). While these arcs aren't exactly what will be seen in game, they give a pretty good idea of the performance.



2x3 Torpedo Launchers

Torped 14

12km range

62 knots

12,800 alpha

Detect: 1.4km

Flood Chance: 215%

Reload: 69s


Sweden really only used one torpedo throughout WWII, the Torped 14. The torpedo itself was quite nice, though it did have a small charge (248kg), which is similar to the Mahan’s Mk 15 mod 0 torpedo, which has a 224kg charge. Therefore, the torpedo would have just under 13k alpha, which is make up for by the competitive speed and quick reload.


While I’m not certain of the exact angles the tubes would have, they should be quite good forward, but a bit lacking to the rear, due to the design having cranes on it.


AA Weaponry

1x3 152mm/53 Bofors model 1942 30.9 dps @6km

2x2 152mm/53 Bofors model 1942 50.4 dps @6km

10x2 40mm/70 Bofors Model 1948 270 dps @4.2km

7x1 25 mm L/64 Bofors Model 1932 ~29.9 dps@2.0km


I almost considered not doing this section considering it will be pointless before this ship will ever be in game, but i figured that I should add it in just so you could get an idea of how insane the AA is. The Bofors that litter most ships above tier 6 are the 40mm/60 caliber bofors, but the mounts on the Tre Kronor are the 40mm/70 cal model 1948. Well, so what? They’re a few years newer, sure, but that doesn’t explain the insane range and DPS boost compared to the standard. Well, the rate of fire of the 40mm/70 was double that of the standard 40mm/60 Bofors gun currently found in game (240 as opposed to 120rpm)-AND the range was also better than the predecessor. I estimated a bit for the 25mm gun, as the gun was said to be more effective than the 20mm oerlikon, so i estimated about 1.2x the dps of a single mount of that, but info about this specific gun is hard to find-not that it realistically matters, considering the insanity of the 40mms. Just be glad I’m not proposing the refitted version which saw those 25mm guns replaced with 7 more 40mm Bofors. Either way, you’re going to BULLY T6 Carriers, and you should be able to at least hurt the T8s.


Slot 1: Damage Control (standard

Slot 2: Hydro (standard

Slot 3: Radar (25s, 8.49km) OR MBRB (-33% to reload speed, 45s duration, 180/120s cooldown, 1/2 charges)


No DFAA. CVs are going to suffer enough trying to touch this thing. I’m not that evil.


>T7 Premium CL
>Late War


I know, I know, another T7 premium CL with Radar. But realistically, if Tre Kronor is going to survive at T7, she certainly needs the radar…..or does she?

I’m also proposing that Tre Kronor have the option to fit a unique MBRB. Now, the 152mm gun that Tre Kronor has could fire 10 RPM at surface targets and 15 RPM in an AA function. What this unique MBRB does is allow Tre Kronor to have a 45 second period in which she has a 4 second reload against surface ships. In case you’re wondering why I had a second DPM number in parenthesis when discussing those numbers earlier, that’s why.

Why does Tre Kronor need these powerful consumables? Well, you’ve probably noticed that I drew a lot of comparisons to Duca Delgi Abruzzi, another T7 cruiser. The issue with that is that the Duca is pretty underwhelming at T7, and is generally regarded as one of the worst T7 cruisers. However, Tre Kronor fixes major issues that the Duca has (mainly, range). The problem is that Tre Kronor is a perfect T6.5- it would need nerfs to fit into T6, and needs some help fitting into T7. I chose the latter option.

The door is always open to giving it a heal. I didn’t want to make it more gimmicky than it already is, though.


Thanks for reading. I look forward to and appreciate your feedback!


Edited by Kingpin61
  • Cool 2
  • Meh 2

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638 posts
19,884 battles
2 minutes ago, KosuzuMotoori_ofSuzunaan said:

I have to say, invent-a-shell is a very fun game


Thanks again for your help <3

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638 posts
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1 hour ago, Umikami said:

What …. No PICS!?!?!



Linked it in the first paragraph but i guess i can post it again

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607 posts
11,769 battles

I like the ship. That's an interesting gun layout. Based on the guns, and the fact it's a unique cruiser alone I'm saying yes please!


I don't know that you'll be able to convince people to give her Radar AND Gun reload, but you might get one of them. Giving a ship good AA (Anti-CV) plus those two consumables (Essentially completely Anti-DD) might cause WG to have second thoughts too. I know she's got low health, and crap armor, but will it really balance her? At T7, she's liable to be top tier a fair bit.


Overall though, +1! We need more unique ships/nations in the game!

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9 posts
50 battles

Seeing how the 40mm/70 shreds planes at T9 on the Friesland I think the amount of AA mounts on Tre Kronor would be overkill at tier 7 even without any Defensive AA consumable. 

Maybe she could be balanced at tier 8 with some slight modifications, see below. 

By bumping her rate of fire from the surface to surface shells limit of 10 shots per minute to the 15 shots per minute she could manage with the AA shell the total rate amount of shell would land on 15 x 7 = 105 shells per minute comparable to Clevelands 9.2 x 12 = 110.4 shells per minute and pass Chapayevs 12 x 7.5 = 90 shells per minute. 

If this is not enough there is always options for consumables such as hydro, radar, defensive AA, heal to balance her performance to fit at a tier where her AA would make more sense. 

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