While not pleasant for some the 2 km erg test is valuable for assessing your strength endurance. So lets formulate a plan and get this one done.

STRENGTH

Shoulder Press for load:
#1: 5 reps @ 65%
#2: 5 reps @ 75%
#3: 5 reps @ 85%+

CONDITIONING 

Testing:

2 k Row

CAP 12:00