New helm being Submitted to Compendium

The Merchant Helm
Cost:  50,000 gp
Maximum Tonnage:  500 tons
SR:  1 point for every 12 levels of the spellcaster on the helm
Special Penalty:  Reduce MC by 2
Special Penalty:  Increase AR by 3 (maximum 10)
Special Penalty:  Take double damage from weapons

Merchant helms have only two things to recommend them:  their cost and the
amount of tonnage they can move.  Ships with merchant helms are slow,
unwieldy, and vulnerable to enemy fire.  Nevertheless, they are likely to
become the workhorses of interspheric trade.