I am thinking about the feasibility of having midget subs for
our Navy Divers to carry out covert missions. Firstly,they will
greatly increase the mobility and survival rate of the teams. They
can be launched from a mother ship(maybe a modified one from our
large merchant navy) or from a specially modified Challenger class
sub. This way they can be launched further away from the enemy
coast,maybe even with the mother ship or sub in the safety of
international waters.
The midget sub will also enable them to carry out missions with
longer durations and greater flexibility as the teams will arrive
at their objective relatively fresh. Additional weapons,ammo,food
and water can also be stored in the sub.
The midget sub can even be armed with one or two small
torpedoes/mines for covert attack roles or self-defence.
We can disguise them as Deep Sea Rescue Vehicles(DSRV) or rather
have DSRV with dual roles during peace time to avoid unnecessary
protests from our neighbours. Of course,if the idea is feasible
this project should be kept tightly under warps due to its
sensitivity.
What are your views on this matter? I am intrested if the RSN have
any defences against such threats. I will like to hear from RSN
personnel or even better Navy Divers for their comments. Thanks.

Links:
North Korea Naval Midget
Submarine
http://www.strange-mecha.com/ship/M-Sub/N-Korea01.htm
WW II German Midget
Submarine
http://www.strange-mecha.com/ship/M-Sub/GM-Sub.htm