A couple-o-designs

Hello list,

I am a FT player of about a year now but brand new to this list so if
the
following design(s) have been done before or if the math is wrong or
even if
they just suck then its all the fault of mine so please be gentle.

U-BOAT
Hull:30
Damage pts:15
Mass left for stuff:15
Thrust:6
STUFF:
Cloaking field
2 pulse torps
1 class 'C' battery (3 arcs)
COST: 295

MISSLE	CORVETTE
Hull:10
Damage pts:5
Mass left for stuff:5
Thrust:8
STUFF:
2 missles (normal type)
1 'C' battery (3 arcs)
COST: 67
These are very dangerous in groups of 2 or 3.