are all gov/military acquisition be exempted or zero rated on gst?

400 meter is below several layers of thermocline. Most submarine don't have to worry much about the active sonar as the submarine can usually hear the active sonar at far greater distance than the sonar can detect the submarine. The one they need to worry about is passive sonar, especially a ship with "tail". Depth is important if the sub want to move fast. The high water pressure will reduce the chance of cavitation.

Type  071... not a flat top

Pakistani Navy to Purchase Eight New Submarines From China

Pakistani Navy officials said the National Security Committee has given the final go ahead for plans to purchase eight submarines from China. Pakistan has been negotiating the submarine purchase with China since 2011, with initial plans to purchase six, and subsequently raising the number to eight. The plan is viewed as a means to address the country’s force imbalance with India.

Well, I'm not quite good in ship knowledge. After make few comparison, length 130m doesn't fit with 13000t displacement. All LPD with 12000t~14000t displacement got >160m length.

http://en.wikipedia.org/wiki/Amphibious_transport_dock

if you ask me, i can say i share the same prejudice with them.

can be said 

the newly AWCS ordered by pakistan by china was also incomplete when arrived. It not be fully tested as well

the warship for pakistan by china also have several issues highlighted in local defence

Then again, it what you get for what the price you pay

Now we see the new attack heli "given free" by china on how well it fare in actual combat.

f35 is long done over price.. and numerous fixes that lead to another problems. Some even call it the "flying waste of money"

All those issues you highlighted except the MIG29 probably, issues are stamped from own customization needs

The scorpene is due to wear and tear, I not sure why the navy decided to sail the entire sub from France to here rather on a transporter like vietnam kilo. Plus, it not a high endurance sub to begin with.  Maybe enhance crew training in actual operation. What for sure, it can submerge while in france before it reached here

The a400 was still a paper plan when we purchase it. Breaking the norm the air force which usually purchase ready mature products. Again, it said to be a political purchase which i find it quite relevant 

Looks like it will not be a flat-top design.
According to Marhalim's article it is a smaller variant of the Type 071. IMO the design looks similar to the Makassar Class.

radar failure?

That captain got get hard screw from upper rank

can't imagine the crew face when there heard the sound

The US State Department approves the sale of 15 AH-1Z Viper Attack Helicopters & 1000 Hellfire Missiles to Pakistan.
http://www.dsca.mil/major-arms-sales/pakis...ire-ii-missiles

IINM DSCA announcement is an estimate price. Actual contract price will differ from the DSCA announcement.
Indonesia DSCA announcement was for an estimate cost of $1.42 billion for 8 AH-64E Guardian.
The “firm-fixed-price” foreign military sales (FMS) contract is valued at $296 million.

how much indo pay for ah64E guardian? tbf last time i mention msia better just go for ASH and ah64e in one whole package, both were made by boeing