Only change values in grey cells. Start with TL top left. Columns are added together at the top, green good and red bad. Empty space is allocated to Cargo.
You should be able to get more system rows by copying an entire row and inserting a new row. You can get more Mixed Turrets by inserting 4 new rows and copying the existing 4 rows.
If you need more rows insert entire rows, not just a few cells.
Red numbers means something is wrong...
Big ships are possible, they use capital ship drives from MgT HG.
This is an Excel sheet without macros or other OS dependencies, so should work fine with LibreOffice on most platforms.
Tutorial:
http://www.travellerrpg.com/CotI/Dis...ad.php?t=41164
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