SEC File Format
The SEC File Format is used by many legacy Traveller mapping format files.
SEC File Format: This file format for a single Sector is a fixed field layout, typically described in the file header.
The data includes: the Primary World Name, Location within the sector as a grid reference, UWP, Bases present, Trade Codes, Travel Zones, Population Multiplier, Asteroid Belt count, Gas Giant count, allegiance code, and data about the types and sizes of stars present.
SEC File Format Example
An example for the Spinward Marches sector is provided below.
- Note that the actual system data does not start until line 18 within the file.
SPINWARD MARCHES SECTOR
The data in the sector text files is laid out in column format:
- 1-14: Name
- 15-18: HexNbr
- 20-28: UWP
- 31: Bases
- 33-47: Trade Codes & Comments
- 49: Zone
- 52-54: PBG
- 56-57: Allegiance
- 59-74: Stellar Data
....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 Zeycude 0101 C330698-9 Na Ni Po De 613 Zh M9 V Reno 0102 C1207B9-A Na Po De 603 Zh G8 V M1 D
All known SEC Sector files can be found at the Traveller RPG Wiki, attached to each sector article under the data file link in the Infobox.