Universal Ship Profile

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The Universal Ship Profile (USP), Universal Craft Profile (UCP), or Imperial Ship Profile is a universal code for describing ships or vessels.


The Imperial Ship Profile is used by the Scout Service to classify ship mission and performance. All together, the ship's vital statistics are presented in one short record. The record is relatively brief and finer detail can be documented elsewhere in the data file.

Image Repository[edit]

  1. How the Universal Ship Profile works.
    Trav-USP-CT-Highguard-pg-52 04-June-2019a.jpg

USP Value Parameters[edit]

START BLOCK: 111334 Unicorn-S-

  1. Ship Registration #
  2. Ship Name (Named Ship)
  3. Ship Type Code (alphanumeric code: typically 2 to 4 characters)

BLOCK-1: 0000000

  1. Tonnage Code (Tn)
  2. Configuration (Hl) (CBPUSAL)
  3. Jump (J-?)
  4. Maneuver (M-?)
  5. Power Plant (P-?)
  6. Computer (Sc-?)
  7. Crew (C-?) (...excludes marines)

BLOCK-2: 000000

  1. Hull Armor (Ha-?)
  2. Sandcasters (Sc)
  3. Meson Screen (Ms)
  4. Nuclear Damper (Nd)
  5. Forcefield (Gb)
  6. Repulsor (Rp)

BLOCK-3: 00000-0

  1. Lasers (Ls)
  2. Energy Weapons (Ew)
  3. Particle Accelerators (Pa)
  4. Meson Guns (Mg)
  5. Missiles - (Ms)
  6. Fighter Squadrons (Fs)

END BLOCK: MCr14.5 100 tons

  1. MCr Cost
  2. Tonnage

NOTES: Ship registration numbers tend to be six alphanumeric characters in length, but some older or large production lot ships can greatly vary by local custom and manufacturer.

Configuration Codes[edit]

Configuration indicates the shape and degree of streamlining the hull demonstrates. [1]

USP Configuration Streamlining Price Mod.
1 Needle/Wedge Hull Yes: Streamlined Hull +20%
2 Cone Hull Yes: Streamlined Hull +10%
3 Cylinder Hull Partial: Partially Streamlined Hull No Difference
4 Close Structure Hull Partial: Partially Streamlined Hull -40%
5 Sphere Hull Partial: Partially Streamlined Hull -30%
6 Flattened Sphere Hull Yes: Streamlined Hull -20%
7 Dispersed Structure Hull No: Unstreamlined Hull -50%
8 Planetoid Hull No: Unstreamlined Hull No Difference
9 Buffered Planetoid Hull No: Unstreamlined Hull No Difference

USP Information Blocks[edit]

One version consists of three blocks in this order:

  • Ship mission codes
  • One number or letter each for:
  • One letter each to signal the presence of other features
    • A: (heavily) Armed (..sometimes omitted if the mission code suggests it should be armed, or for light weapons such as a single laser turret on a free trader)
    • C: Cold Sleep (...at least enough low berths to carry the entire crew)
    • D: Long Duration (...extra supplies or stores, and/or the ability to manufacture its own)
    • E: Energy Weapons (...not including spinal weapons)
    • K: Kinetic Weapons (...not including missiles or spinal weapons)
    • L: Lab (...in some form: a significant amount of tonnage for scientists to work in)
    • M: Missile Weapons (...including torpedoes, not including spinal weapons)
    • N: Nonhumanoid (...designed for crew with nonhumanoid body plans)
    • P: rePair facilities (...adaptable to any ship that the ship's crew agrees to fix, whether or not the facilities are optimized toward a certain type of ship; ships only able to repair themselves and their own smallcraft do not count)
    • R: all Robot crew (...a drone, possibly including biological androids but no sophont crew, whether or not the ship carries passengers and/or takes orders from a captain who may or may not usually be aboard; a sophont artificial intelligence crew would disqualify their ship from this code, but none are known to Charted Space as of 1105)
    • S: Spinal Weapon
    • X: eXperimental (...the opposite of a standard design: a ship class consisting of few examples, possibly just one; any AAB article about a ship with this code should be understood to be data on what the ship used to be like some time ago)

NOTES: Regardless of version, each position has a "factor" or value that represents an element of the ship. Common elements include hull displacement tons, hull configuration, computer type, weapons, screens, fighters and the number of crew.

A size modifier and indicator of 00 means something that is no more than 0.000001 tons. This is typically debris or small munition being individually tracked for some reason, or a tiny drone. Civilizations as early as TL-8 have been known to put up monitoring satellites this small. The Imperial planners who developed this standard decreed this as the smallest size worth distinguishing, based on measurement standards dating back to pre-spaceflight Terra.

History & Background (Dossier)[edit]

The usage of the USP in various formats can be traced well back to the First Imperium although scholars argue much of the research.

When the possibility of a hop drive was discovered, with the observation that jump drive will cap out at a 9 parsec range, jump performance codes A-J were reserved for hop drive (A = Hop-1 through J = Hop-9), K-T for whatever would come next after hop drive, and U-Z for any drives beyond that, skipping I and O as usual.

Selected USP examples[edit]

Examples include:

  • MT C4831U LC : merchant transport, tech level 12, 400dt, jump 3, g 1, unstreamlined, cold sleepers, lab
  • VCR C2A23S ADNS : vargr cruise strike, 20000dt, jump 2, g 3, streamlined, armed, long duration, nonhumanoid, spinal mount weapon
  • FI F3704A EKM : fighter imperial, tech level 15, 30dt, 4g, airframed, energy, kinetic and missile weapons

Extensions and Modifications[edit]

To condense information more for a quick description, There is the performance code


  1. Ship Registration #
  2. Ship Name (Named Ship)
  3. Technology level
  4. Ship Type Code (first letter only)


  1. Tonnage Code (Tn)
  2. Jump (J-?)
  3. Maneuver (M-?)
  4. (if size code 0) -Tonnage}


  1. Highest Weapon Rating

USP Examples[edit]


  • Scout 9S-222-0
  • P.F. Sloan 15F-E46-9
  • Ghalak 15C-P45-H
  • Azhanti High Lightning 14C-P52-N
  • Plankwell 15B-S45-T

Another possible change is to annotate details in brackets, such as:

  1. Limited or extra jump fuel after jump drive
  2. Agility after manuever drive
  3. Frozen watch after crew
  4. Batteries {bearing and total if applicable} after weapons


  • Antiama FC-R4425J3-29(B,G)9901-9(B,G)9(4,5)999(42,60)-30 MCr51,922 100kTon

Another possible change is to annotate damage to systems in square brackets.

  • BC-9514 Kinunir BC-A244(1)[3]7G2-000510-5(2)[1]02(2)03(2)-0 MCr1336.63 1250 tons

The Kinunir has taken a manuever drive hit and a weapon hit, which rendered one battery of lasers inoperable.

See also[edit]

Please refer to the following AAB Library Data for more information:

  • Speed of Travel

  • Ship Design:

    Naval ship construction[edit]


    This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.