What it is
Heavy Plating is a stat-modifier ship passive that increases the carrier’s maximum hit points by a percentage. It is one of sixteen passives registered in the passive index and follows the standard five-tier rarity scaling shared by every percent-stat passive in the game.
Identity
| Field | Value |
|---|---|
| Display name | Heavy Plating |
| Description template | +{value}% max HP |
| Stat target | hpMax |
| Unit | percent |
| Scaling curve | Defensive percent (5 / 10 / 16 / 23 / 32) |
The stat target is the ship’s hpMax field, which sets the upper bound of the hit-point pool used for damage intake during a run. The bonus is multiplicative against the ship’s base hpMax and applies once at run start through the standard passive-resolution path.
Per-rarity values
| Rarity | Value |
|---|---|
| Common | +5% |
| Uncommon | +10% |
| Rare | +16% |
| Epic | +23% |
| Legendary | +32% |
The five values come straight from the passive’s values tuple, indexed by rarity. Each step roughly doubles the gap to the next tier on the way up: +5, +5, +6, +7, +9.
Which ships use it
At the verified commit, no ship in the roster declares Heavy Plating as its passiveId. The passive is registered and resolvable through the helper functions in the passive index, but the baseline ship stats default to a different passive and no per-hull override assigns Heavy Plating. The passive is available content awaiting a ship assignment.
How it stacks with other effects
Heavy Plating modifies a single named stat (hpMax) by a percent value, so it slots into the same stacking path as any other percent-stat passive. The bonus is applied at run assembly through the shared passive applier — no custom handler or triggered effect is attached to the definition. Other sources of hpMax modification (mods, artifacts, upgrades) combine with the passive’s contribution according to the run-assembly layer’s stacking rules, not anything intrinsic to this passive’s data.
EXTRACT-CANDIDATE: “no ship uses Heavy Plating” is true at the verified commit because a full-tree search for the string heavy_plating only finds the passive’s own definition and its registration in the passive index — no passiveId: 'heavy_plating' reference exists in the ship roster files. If a future patch wires this passive onto a hull, the “Which ships use it” section will need a ship table.
EXTRACT-CANDIDATE: exact multiplicative-vs-additive interaction between this passive’s hpMax bonus and other hpMax sources (mods, artifacts, upgrades) is not specified in the passive data file. Confirm against the run-assembly service before adding a stacking-order claim.