It may just be me, but i can't quite seem to figure out how this "sins ship damage chart" works, any help?
Each type of ship has an Armour type and a Damage type (first table on the chart)
The different Damage types are more or less effective against different Armour types (second table on the chart).
For example, take a flak frigate and a light frigate.
The flak frigate has Heavy armour and does Anti-VeryLight damage. The light frigate has Medium armour and does Anti-Heavy damage.
When attacking the light frigate, the flak frigate will do 25% of its normal damage (Anti-VeryLight damage vs Medium armour).
When attacking the flak frigate, the light frigate will do 125% of its normal damage (Anti-Heavy damage vs Heavy armour).
Also what does LRM stand for?
Long Range Missile, the TEC long range frigate, although it's also used as a generic term for the 'long range frigate' class of all races.
Edit: One more thing, these charts are they the same for vasari/advent?
The Armour and Damage type of each ship class is the same, regardless of faction, with the exception of Advent long range frigates (Illuminators), which do Capital damage rather than the Anti-Medium damage of the other two factions' long range frigates.