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Grom is a Tier VI European torpedo destroyer reaching 7.5 km. The torpedoes travel at 72 kt, so target reaction time is shorter than peer DDs; this is a torpedo-spam kit, not a gun trade kit. Standout traits: best Defensive AA flak boost in T6 DDs (200).
Sit at the edge of a contested cap from concealment and cycle torpedo waves into lanes the enemy has to use - 7.5 km reach at 72 kt means the wall arrives before targets can react. Drop on probable lanes from cover, stay unspotted between waves, and let the wall do the work.
The kit pays out by saturating lanes, not by waiting for guaranteed broadsides; missed waves still force rotations and protect your team's flank. Idle torpedo tubes are the worst output state.
No stat falls into the cohort's bottom decile across T6 DDs. Stable baseline in every category, no glaring weakness to play around.
Storm Lantern is a premium event variant and not available to unlock in the Tech Tree. Acquisition path: Containers. Container chances are shown as the listed odds of receiving this exact ship, dividing grouped ship-pool odds across the resolved ships and including nested container paths when a crate can drop another crate.
Pirate Chest '26
3.5%
VI Storm Lantern + 1,000 Ship Parts
Event containers · Pirate Chest '26
Build for concealment, speed, gun reload, torpedo uptime, and survivability.
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Where Storm Lantern sits among Tier VI DDs (40 ships). Notable standouts are shown first; the rest of the cohort-ranked stats are in the expand below. Acquisition variants (Black Friday, Founders Edition) are counted once with their base ship, not as separate peers.
The stats below come from the base ship, Grom. This ship is built on the same hull; in-game data for the variant itself is not available.
All values are ship base stats with modifications and upgrade changes denoted inline.
Damage Control Party∞ charges · 40 s reload · 5 s active
Smoke Generator2 charges · 240 s reload · 15 s emit / 85 s cloud active
Engine Boost2 charges · 160 s reload · 100 s active · +5% speed bonus
Defensive AA Fire3 charges · 140 s reload · 25 s active · +200% flak burst boostNumbers the spec table cannot show directly: alpha-strike math, DPM, dispersion, AP penetration. Click the formula chip on any row to reveal how it is calculated.
Shell grouping (sigma); shown in-game as Shell Grouping.Horizontal dispersion ellipse width at max range. (R/30·(idealRadius−minRadius)/idealDistance + minRadius)·30 = (9700/30·(8−0.5)/1000 + 0.5)·30 = 87.8 mVertical dispersion ellipse height at max range = max horizontal × radiusOnMax = 87.8 × 0.6 = 52.7 m50%-hit horizontal radius = max horizontal × GetHalfHitsRatio(σ) = 87.8 × 0.319 (σ=2) = 28 m50%-hit vertical radius = max vertical × GetHalfHitsRatio(σ) = 52.7 × 0.319 (σ=2) = 16.8 m30 mm ≈ 120 mm caliber / 4 (improved HE penetration: German BBs, Yamato-class, and a handful of others).This ship's HE shells use a 1/4 (~0.25) caliber-to-pen ratio instead of the standard 1/6 (~0.167) - 0.25 in this case. Lets HE pen ~30mm armor instead of ~20mm. Hits every German cruiser (150mm CL, 203mm CA) and BB (350mm+), British heavy cruisers / Lion / Nelson, a handful of other premiums.floor(120 mm caliber / 14.3) = 8 mm (AP auto-penetrates plating this thick or less).All 7 barrels bear on the broadside.180 degrees / 10 deg/s traverse speed = 18 s.1,900 HE damage x 7 broadside guns = 13,300.13,300 HE full-salvo alpha x 60 / 7 s base reload = 114,000.7 broadside guns x 60 / 7 s base reload = 60.7 HE shells x 60 / 7 s reload x 9% fire chance = 5.4.detectability / (speed kt x 2.6 community game-speed factor).range / (speed kt x 2.6 community game-speed factor).2 launchers x 3 tubes.6 (centerline launchers train across - full salvo to either side).tube count x per-torpedo simulated damage (all torpedoes hitting).per-side salvo x per-torpedo simulated damage.Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (25×3.5×1) + (13×3.5×0.95) = 131. Covers AA-only mounts plus dual-purpose secondaries (Bismarck 105mm, USN 5"/38 cruiser secondaries) and dual-purpose main batteries (Sumner-class 5"/38, Akizuki-line 100mm). Formula validated against in-game captures on California, Sumner, Manfred von Richthofen, Dante Alighieri (exact) and within +/-17% on the remaining verified ships.Longest-reaching aura across AA-only + dual-purpose auras.SUM over AA auras of (aura DPS x aura range km). A plane crossing the AA bubble is exposed to each aura for a time proportional to that aura's range, so long-reach DPS is worth more than the same DPS in a short bubble. Units: DPS*km; used to rank overall AA threat across the cohort.Balance updates affecting Storm Lantern. Cards are condensed; use each source link for full context.
Every custom exterior Storm Lantern can equip, from in-game data.
GamingDiver has indexed official WG mentions for this ship, but none are focused enough to show as a primary source card here. Low-context list, crate, comparison, or passing mentions are intentionally filtered out.