Why is it so hard for various producers to create storylines that even remotely pass muster of believability?
Sure, we'll just hop in a "vintage" Soviet submarine, that's been sitting around for however many decades, and off we go! No fuel polishing, taking on fresh fuel, servicing systems, batteries, etc- nope we're just going to grab some food and go!
How many times can we crash said vintage submarine and it not suffer structural damage/ implode?
Escaping in an "escape suit" (which looks like a red Tyvek painter's suit) from ~300 meters depth? Sure, why not! (the pressure from equalizing the tubes would kill you in 2 seconds)
"Sonar" with no pings but a dude can create a 3D map of the surrounding area via banging on the hull?
Speaking of sonar, if anyone thinks it's possible to just slither around underwater in a submarine without various Navies realizing that you're there, it just doesn't work that way.
My absolute favorite though, is the "driveshaft" mumbo jumbo. First of all, ships/ submarines don't have "driveshafts," they have "propeller shafts." I used the plural of the word "shaft" since the Russians have favored twin screw designs for their subs, and all of the exterior scenes in the movie show a twin screw vessel.
Diesel/ electric subs are exactly that. The diesels (again, more than one) turn generators which produce power to charge the batteries. The screws are turned by DC electric motors. They can either run continuously while surfaced, or within periscope depth (where the snorkel allows for engine and cabin air exchange and also hydrogen gas venting from battery charging). When submerged deeper than this, they secure the diesel engines, and everything draws off the batteries (including the propulsion motors). The norm was to run surfaced at night to charge the batteries, and submerged during the day. During combat, they could conserve power and remain submerged for, at most, a few days.
Back to the "driveshaft." Steel shafts don't "shatter" during a fire (especially ones there are 5" - 8" thick, which is what they'd be). What's far more comical to anyone who knows anything about mechanical things, is that what's pictured is a crankshaft from a car sized engine. The auxiliary generator engines on a vessel like that have a crankshaft that weighs over 1000 pounds. The main diesel engine cranks weigh several thousand pounds.
A propshaft for a vessel the size of a submarine is also several thousand pounds.
Even if we ignore the nomenclature, and substitute "prop shaft" for "driveshaft," there would be two of them (one for each screw). So, even if one "shattered," they can limp along on a single screw.
"Oh, we'll just machine it to make it fit." Sorry, but you can't "just machine" a BMW crank and make it fit into a Honda motor!
I seriously laughed out lout at the scene that shows the "driveshaft" spinning away with the throws (which are what the rods attach to in a piston engine) connected to nothing. Oh, the sparks flying were a nice touch too.
I get that this isn't a documentary, but is it really THAT difficult to keep things remotely within reason?
Sure, we'll just hop in a "vintage" Soviet submarine, that's been sitting around for however many decades, and off we go! No fuel polishing, taking on fresh fuel, servicing systems, batteries, etc- nope we're just going to grab some food and go!
How many times can we crash said vintage submarine and it not suffer structural damage/ implode?
Escaping in an "escape suit" (which looks like a red Tyvek painter's suit) from ~300 meters depth? Sure, why not! (the pressure from equalizing the tubes would kill you in 2 seconds)
"Sonar" with no pings but a dude can create a 3D map of the surrounding area via banging on the hull?
Speaking of sonar, if anyone thinks it's possible to just slither around underwater in a submarine without various Navies realizing that you're there, it just doesn't work that way.
My absolute favorite though, is the "driveshaft" mumbo jumbo. First of all, ships/ submarines don't have "driveshafts," they have "propeller shafts." I used the plural of the word "shaft" since the Russians have favored twin screw designs for their subs, and all of the exterior scenes in the movie show a twin screw vessel.
Diesel/ electric subs are exactly that. The diesels (again, more than one) turn generators which produce power to charge the batteries. The screws are turned by DC electric motors. They can either run continuously while surfaced, or within periscope depth (where the snorkel allows for engine and cabin air exchange and also hydrogen gas venting from battery charging). When submerged deeper than this, they secure the diesel engines, and everything draws off the batteries (including the propulsion motors). The norm was to run surfaced at night to charge the batteries, and submerged during the day. During combat, they could conserve power and remain submerged for, at most, a few days.
Back to the "driveshaft." Steel shafts don't "shatter" during a fire (especially ones there are 5" - 8" thick, which is what they'd be). What's far more comical to anyone who knows anything about mechanical things, is that what's pictured is a crankshaft from a car sized engine. The auxiliary generator engines on a vessel like that have a crankshaft that weighs over 1000 pounds. The main diesel engine cranks weigh several thousand pounds.
A propshaft for a vessel the size of a submarine is also several thousand pounds.
Even if we ignore the nomenclature, and substitute "prop shaft" for "driveshaft," there would be two of them (one for each screw). So, even if one "shattered," they can limp along on a single screw.
"Oh, we'll just machine it to make it fit." Sorry, but you can't "just machine" a BMW crank and make it fit into a Honda motor!
I seriously laughed out lout at the scene that shows the "driveshaft" spinning away with the throws (which are what the rods attach to in a piston engine) connected to nothing. Oh, the sparks flying were a nice touch too.
I get that this isn't a documentary, but is it really THAT difficult to keep things remotely within reason?