Do ships in port add defensive fire to an enemy land attack

Do ships in port add defensive fire to an enemy land attack?

I see that on page 70 submarine fleet never retreat.If you attack a submarine fleet and it is damaged and the sub disappear off the screen is it sunk/destroyed.

Started playing the 1943 campaign as Western allies and I noticed that the USSR leave fron line provinces (somlensek with just 1 infantry unit in addition it withdraws most of the military unit from the Baltic States to Moscow which is not a front line province. Is this a good strategy.

No investment in research.

Bought the game yesterday.
Start playing as Russian I put in production 1 infantry and 1 artillery unit in Leningrad. I noticed the factory show up negative what is the meaning. What is the consequences of negative factory? Do I have to cancel the Heavy Fleet due in Spring 1941?

Brisbane Port 9 versus Sydney Port of 10. Sydney has a repair yard which place better for 7 fleet. Brisbane closer to action. As as a Naval base for 1943 scenario which is better.

Landing craft and other smaller vessel should sink due to bad weather but the program has enough problem already. Collision would occur in large fleet operation as well.

Landing craft and other smaller vessel should sink due to bad weather but the program has enough problem already. Collision would occur in large fleet operation as well.

For Carrier squadron
Is the increased firepower guns(18-12) and bombs worth decreased climb (2200 vs 1950) and mnvr (33-32). Also I have seen when checking out aircraft data in a squadron listing F-4F -4 bomb load of 2- 100 lb instead of 2-250 lb.

Where best to use force Z (Prince of Wales and Repluse). Retreat to DEI (Java), retreat to Bay of Bengal, retreat to Australia, defend Malaya?

Lingayen has resources as well. Any Northern attack that uses the road net must come from Lingayen before Clark.

In first part of war the S boat torpedoes are more reliable than fleet boats. Would you spend PP to replace non-aggressive S boat commander with more aggressive commander for these type of subs?

First defense in Philippines.
Is it better to defend Lingayen jungle terrain (x2 defense bonus) no fortification over Clark Field clear terrain fortification 4?

At what odds would you risk losing ship to recover fuel or supply? Base it on allies in 1941 and Japs in 1944/1945.