Hmm… The turrets look distinctly British (including polished metal barrel ends) and they each mount three guns, so I’m going to hazard a guess that we’re looking at HMS Rodney.
the barrels is a giveaway clue 
your turn
Actually, it was both the barrels and the fact you mentioned “two” ships which immediately made me think of the Nelsons, and it took about 5 minutes to make sure which of the ships I was looking at.
Let’s hope my little enigma will prove a bit more challenging.
Happy hunting!
Chinese cruiser Ning Hai
Of course! Sterling work, my dear Mr.Gumalangi!
I should have known it would be an easy one for you. Please, proceed.
Thank Mr Wingsofwrath
perhaps anyone could identify this mysterious submarine 
Very clever, but I got it fairly easily! 
Looking at the picture, it was kind of obvious this was a Project 613 (Whiskey Class) boat with which I am intimately acquainted, having visited a couple of them, and an early type, judging by the fact the AA armament is still present (this was deleted in later boats).
Guided by the fact the number looked unlike any of the Russian boats I’ve seen and the fact you have your national flag proudly displayed in your avatar, I immediately looked at pictures of Indonesian Navy submarines, and, sure enough, there she was - RI Tjakra/S-01, one of the first two Indonesian submarines, both Project 613 Type C boats purchased from the Soviet Union in 1959.
well done sir!
The thread is yours
Thank you, Mr. Gumalangi!
If we started with submarines, then, by all means, let’s continue. What is the name of this boat?
I found HMAS oxley resemblance of the mysterious submarine, it has one sister ship. HMAS Otway. These were Odin class submarine modified for Australian Navy
You are very close, but not quite there. The mystery sub is not quite Odin class, but it does have a lot in common with them.
Also, this particular sub is definitely not Australian.
Keep searching, you’re doing great!
Hello Mr wingsofwrath,.
sorry for the late answer,. i am close to dropping the towel,. but P class seems got similarity on the tower and periscope,.
but really,. i think i am lost,.
Don’t give up just yet, Mr. Gumalangi!
You were, very, very close when you were talking about Odin Class - the boat is most certainly British built, and, in fact, there is a direct link to it from the Odin Class Wikipedia article…
It’s just that it isn’t a straight Odin, but a slightly smaller design based on this class.
Ah,. your hint is a giveaway answer :)., its a chilean’s submarine almirante simpson
Well done, Mr. Gumalangi!
She is indeed the “Capitan O’Brien” class submarine “Almirante Simpson”, built in 1929 by Vickers for the Chilean Navy.
Your turn!