The Mark, or Mk, level of an item corresponds directly to the minimum rank a player must hold in order to be able to equip the item. The odd-numbered Marks (e.g. I, III, V, VII, IX) correspond to slightly lower-quality versions of the next Mark up. In other words, a Mk III item is a lower-quality version of a Mk IV item, both of which can be used by their corresponding rank (Lt. Commander). The higher the mark number, the greater the items' abilities.
 Mark Tiers
Each mark has a minimum rank that a player must achieve before items of that mark can be equipped. Marks can also be divided into tiers, based on the tier of starship they are appropriate to. Note though that a player can equip any mark of item in any tier of ship, so long as that player has achieved the correct rank.
|Tier 1||Standard Issue|| Ensign|
|Mark I–II|| Lieutenant|
|Tier 2||Mark III–IV|| Lieutenant Commander|
|Tier 3||Mark V–VI|| Commander|
|Tier 4||Mark VII–VIII|| Captain|
|Tier 5||Mark IX–X|| Rear Admiral, Lower Half|
Romulan Subadmiral 1
|Mark XI–XII|| Rear Admiral, Upper Half|
Romulan Subadmiral 2
|Mark TBD|| Vice Admiral|
Romulan Vice Admiral
|Tier ∞||Mark ∞||Any Rank - These items level up as the player does|
|Standard Issue-S||Any Rank - These items level up as the player does, limited to use on fighters and shuttles.|
 Standard Issue
When the player gets their first command, either a Light Cruiser or B'rel Bird-of-Prey, it is equipped with Standard Issue equipment by default. Similarly newly recruited bridge officers are equipped with Standard Issue personal shields and weapons. Federation standard issue is effectively Mark 0, and represents the base for the statistics of each type of item.
 Klingon Standard Issue
By contrast, Klingon Standard Issue equipment is equivalent to Mk II. This is probably due to the lack of a tutorial and low level content for Klingon players. Some Klingon starships also come with uncommon standard issue items. These are:
- [Shield Array Klingon Standard Issue]- Has a +55% bonus to shield capacity
- [Disruptor Dual Heavy Cannons Klingon Standard Issue]- Has bonus +10 accuracy
 Standard Issue-S
Shuttles and other auxiliary craft come equipped with special equipment that scales with the player. Rather than gaining discreet bonuses as with mark numbered items, the bonuses attributed the these items increases linearly with the player's level. For instance, a basic shield array gains 5% capacity for every mark number, but a shuttle shield array gains 1% for each level of the player. This means that a on a shuttle would have an extra capacity of 50% (1,875 in a basic shuttle), but a owned by a Vice Admiral level player (level 51) would gain a bonus capacity of 51% (1,888 in a basic shuttle).
Note: there are also Mk I-S and Mk XI-S special items that do not scale with the player.
 Tier Infinity
These rare items level up as the player does. Looking at the table of Marks and Ranks above, generally the quality of these items will be better than the lower mark level, for your rank, but not as good as the higher mark level of your rank. Many find it cheaper to simply hang on to these rather than purchase new items every rank up.
 See also
Rarity --A measure of an item's modifiers to an ability.