From the bottom (stern) up (forwards):
Propshafts/couplings
Gearbox with motors incorporated
Filter chokes
ESCs
NiMH battery (7.2V, 3700mAh)
Battery connector
Two 2Amp motor/esc fuses with a 1A circuit breaker (blue) to port for the bec
Main 10Amp battery fuse (black box at bow).

The signal wires for the escs and rudder servo are gathered together up the starboard side.