DOSSIER · UNCLASSIFIED · OPERATIONS
SECTION 10 // ARMOR / VEHICLE PROFILEREF · SDP-WZ-66-GROM
SDP wz 66 Grom
VIIIPremium

SDP wz 66 Grom

PolandPoland·Tank DestroyerTank Destroyer·ATSPG assault

The SDP wz 66 Grom, a tank destroyer from the late 1950s to early 1960s, was designed taking into account Soviet experience of developing similar vehicles. The armor was meant to withstand attacks from existing and potential NATO tanks, and a gas-turbine engine was planned to increase mobility. As armament, several types of guns were considered, including so-called deep-rifled ones. It was not possible to implement some of the ideas due to the technological restrictions of the time. All of the concepts went no further than blueprints.

Health
1,300
DPM
3,000
View range
350m
Speed
45km/h
Camo
67Good
Mark of Excellence requirementsCombined dmg + assist · NA · 2026-08-25
3 marks of excellence
3 marks · 95%
3,481
2 marks of excellence
2 marks · 85%
2,787
1 mark of excellence
1 mark · 65%
1,920
A-01 · ARMOR SCHEMA

Armor thicknessMeasured

Nominal plate thickness straight from the game client. Click any plate to highlight it on the 3D model and focus the camera on it.

Armor
20mm
195mm

Hull

All 21 plates
A-02 · SPECIFICATIONS

Specifications

Builds
Grade
Experimental
CrewShared perks
Field mods
Lv 0/6
Weaponry
DPM
3,000
Damage
800
Penetration
272 mm
… at 500m
264 mm
Reload time
16.00 s
Rate of fire
3.75/min
Aim time
2.70 s
Dispersion
0.400 m
… moving
0.200
… tank traverse
0.200
… turret traverse
0.080
… after firing
4.0
Caliber
100.0 mm
Shell velocity
1,400 m/s
Max range
720 m
Ammo capacity
40
Potential damage
32,000
Shell cost
1,450 cr
Mobility
Top speed
45 km/h
Reverse speed
15 km/h
Power/weight
15.88 hp/t
Tank traverse
32.0 °/s
Turret traverse
26.0 °/s
Effective top speed
… hard
45.0 km/h
… medium
45.0 km/h
… soft
31.8 km/h
Effective traverse
… hard
32.0 °/s
… medium
27.1 °/s
… soft
17.6 °/s
Gun elevation
15 °
Gun depression
7 °
Gun traverse range
-5° / 5°
Terrain resistance
… hard
1.10
… medium
1.30
… soft
2.00
Everything Else
Hull armor
100 / 70 / 40
Health
1,300
Engine health
360
… repaired
170
Track health
200
… repaired
150
… repair time
6.86 s
Ammo rack health
200
… repaired
135
Fuel tank health
200
… repaired
70
Total weight
51,000 kg
Stationary camo
14.55 / 6.36%
Moving camo
8.75 / 3.82%
View range
350 m
Fire chance
20%
Gun Constraints

-5° / 5° traverse

Crew
  • CommanderRadio Operator
  • Gunner
  • Driver
  • Loader
A-03 · SERVER PERFORMANCE

Server performance

Aggregate stats from NA players over the last 30d

Avg WN8
1685
Very Good
Avg WNX
1629
veryGood
Win rate
51.2%
Average
DPG
1599
Frags
0.90
Spots
1.01
Survival
23.3%
Dmg taken
1232
Hit rate
74.0%
Spot assist
217
Track assist
32
Defense
0.14
Avg XP
808

Aggregated from 2,763 tracked NA players · 15,047 battles. Coverage grows as more players are tracked.

MoE thresholds (combined dmg + assist)
65%1,920
85%2,787
95%3,481

Reach these combined damage (dealt + assist) values over a rolling window to earn marks of excellence.

Performance over time

Daily NA 30-day aggregates — how this tank trends as patches and meta shift

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Population spread

How NA players actually perform in this tank (30-day window)

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A-04 · TOP OPERATORS

Top players

Highest performers in the SDP wz 66 Grom on NA

  1. #1Philjamin177 battles3,623
  2. #2Varaxxus110 battles3,504
  3. #3V3O117 battles3,350
  4. #4Thraximundurabrask181 battles3,305
  5. #5_Sky174 battles3,296
  6. #6Tsugumori_Kai_II146 battles3,274
  7. #7SubWulf260 battles3,173
  8. #8bean_pegasus373 battles3,172
  9. #9Gazelle_Intensity114 battles3,139
  10. #10ethanstriker231 battles3,117
A-05 · VIDEO INTEL

Video reviews

Curated reviews, replays, and guides from veteran players

A-06 · SIMILAR HULLS

Similar tanks

Closest matches by stat profile — pick the ones that fit your playstyle.

A-07 · CHANGELOG

Balance changelog

What changed for this tank between game versions

No tracked balance changes

When this tank gets buffed or nerfed in a patch, the change shows up here.

The full Poland tech tree