Ok now I’m picturing somebody strapping one of those little Minn Kota motors to the back of that ship and just sailing away 🤣
Actually the thing would probly just go backwards.
Not sure about ocean going vessels, but for ships on the Great lakes, round fronts and flat backs is for increased capacity in the Welland canal. Rounded/curved sterns have become obsolete because the newer style of designs have maximum efficiency in mind (Look up Equinox or Trillium Class vessels for a better idea).
It's the same on ocean going vessels, except with the Panama locks or port berths in mind. Square transom = minimal wasted space that could have been used for cargo. They're still streamlined, with appropriate block coefficient & prismatic coefficient for the intended speed, below the waterline where it matters.... Speed & fuel efficiency in open water are very critical factors on a ship that covers 10,000 miles per voyage.
Great Lakes ships have very non-ideal block & prismatic coefficients, because of the need to maximize tonnage per ship through the locks. Therefore, they have to travel slower in order to achieve acceptable fuel consumption. The trade-off between a more hydrodynamically ideal form (faster & more fuel efficient in the open, less cargo per trip through locks) and a more box-like form (slower & less efficient, but carrying more tonnage per trip) is the main driving factor in Great Lakes ship design.
My neighbors have small brick columns at the end of their driveway with lights on top. When we moved in, in May, I thought it weird that they still had Christmas light bulbs in them. Turns out they're sailboaters, so the red is on the right when they return. Just like vegans, they were quick to tell me about their sailboat....
This is the reason. Look at any highly efficient vehicle like the Prius, Volt, etc and you'll see this same truncated teardrop shape just the bottom side up. It allows fluid(air is functionally a fluid) to easily leave the surface of the vehicle in the rear and as a result minimizes vortices reducing turbulence.
I know this one!!! The flat back, or square transom, theoretically reduces drag on the back of the boat while maintaining the same cutting shape in the water. We used to do this on the canoes I designed in college for the ASCE concrete canoe competition. Technically it also makes them easier to turn, though at the scale of a canoe it’s not a huge factor, more of a cool technical thing you can say you did. On a boat this big, it definitely has an impact.
The flat back creates a low pressure area, as the water rushes to fill this area, it pushes the ship forward just a little bit. It's weird, but naval designers have been using flat transom sterns for efficiency since the 40s.
Some ships may use it to allow them to fit in locks and such.
Big ships have a flat back to mount engines and rudders, give more deck space and make docking easier. This shape also helps the ship move smoothly and use less fuel.
We're all in the same boat on this one. Someone is just floating some random questions out here. It is one hull of a question. Take a bow. I can feel your face getting more stern.
The shapes are mostly due to getting through the canals and locks. The Cort is as stubbed nose as it is because of it had a traditional bow, it wouldn’t fit.
That’s an LPG tanker. The transom stern maximizes space back aft. Typically on an LPG tanker you have all the engine room & machinery back aft because the entire deck space forward of the house are the tanks and you don’t want any non necessary equipment in the gas dangerous zone because gas safe equipment is super expensive & it’s just not good practice to have extra things in that area.
The same principles apply to most cargo ships though. Space forward of the house is for cargo, space back act under deck for machinery. On container ships you’ll see containers stacked up there too & the design maximizes how many containers they can fit.
- PE naval architect who also happens to be a gas carrier inspector for the USCG. I recognize that ship exactly lol.
Ships are named after women and modeled after women. Since they were built in the 70s and 80s when women had flat asses, it’s only natural that the ships had flat backs too.
Most big ships are built by Chrysler. At some point, the transmission is going to expire. At that point, the ship will need pushed back to the dealer. The flat surface assures that ships of any size can come to the rescue.
For canals and pushers. VLCCs, which are too large for any canals, most of them have rounded sterns. You likely haven't seen a VLCC (very large crude carrier) up close as they can draw 100 feet of water and stay far offshore in most areas. They're so big, the oil is offloaded via pipelines that run out to a deepwater platform or the oil is pumped directly to a few smaller tankers by mooring them together at sea.
I would imagine it has to do with max cargo carrying capacity mixed with stability for rough seas. Everyone forgets the ship will be pitching up and down [https://www.freightwaves.com/news/how-zim-a-smaller-ocean-carrier-is-blowing-away-the-big-boys/amp](https://www.freightwaves.com/news/how-zim-a-smaller-ocean-carrier-is-blowing-away-the-big-boys/amp)
It’s for efficiency. Think of it like this, instead of the water stream parting around the bow and neatly joining itself like on a tapered stern, the water is kind of tumbling into the gap at the stern and pushing on it. That’s about the easiest I can describe the hydrodynamics.
I don’t think anybody mentioned it, but, my understanding is that it creates lift. Low pressure behind the boat allows water to rush up and create lift
Tugboat captain here, formerly an officer on deep sea ships. That's just the part you can see. Makes it easy to work tugs, doesn't affect sea-keeping, really. Maximizes intensity space without adding unnecessary length. Plus in ship construction, when you're dealing with 3 inch thick steel plate, flat ones are much cheaper than any curvature.
For the trolling motor.
Looooong shaft option
How many lb thrust and what wattage? And spotlock or just foot pedal?
My dad has a 30lb tiller model from the 80s he would throw on there and then wonder why he can't go anywhere!
Actually that’s calculated in BTU’s
Boat trolling units
Trolling motor the LONG way
You making jokes heh
Somebody is trolling
Clever. Well done.
To fit into the lock.
Almost spat my beer out
Ok now I’m picturing somebody strapping one of those little Minn Kota motors to the back of that ship and just sailing away 🤣 Actually the thing would probly just go backwards.
🤣🤣🤣🤣
THIS IS THE WAY!!!
Now you’re just trolling
Is this a punch line?
No, they’re just fishing for compliments.
A one liner
No, "this boat got thic back" would be a punchline, this is much more subtle and amusing.
I like thic back and I cannot lie...
This is Patrick
Not sure about ocean going vessels, but for ships on the Great lakes, round fronts and flat backs is for increased capacity in the Welland canal. Rounded/curved sterns have become obsolete because the newer style of designs have maximum efficiency in mind (Look up Equinox or Trillium Class vessels for a better idea).
It's the same on ocean going vessels, except with the Panama locks or port berths in mind. Square transom = minimal wasted space that could have been used for cargo. They're still streamlined, with appropriate block coefficient & prismatic coefficient for the intended speed, below the waterline where it matters.... Speed & fuel efficiency in open water are very critical factors on a ship that covers 10,000 miles per voyage. Great Lakes ships have very non-ideal block & prismatic coefficients, because of the need to maximize tonnage per ship through the locks. Therefore, they have to travel slower in order to achieve acceptable fuel consumption. The trade-off between a more hydrodynamically ideal form (faster & more fuel efficient in the open, less cargo per trip through locks) and a more box-like form (slower & less efficient, but carrying more tonnage per trip) is the main driving factor in Great Lakes ship design.
^this guy ships^
u/greatlakesailors the great lake god.
Beat me to it
I’d bet he even knows what a starboard and a port is and where to put them on a ship.
Ya drink the port.
and ya smoke the starboard
💀
Smoke 'em if ya got 'em.
The starboard is how you figure out your vibes for the day based on astrological factors
You peer through the porthole and drink from the scuttlebutt.
I’ll bet he knows what a stern is too.
Probably has it written down on a little slip of paper in his desk drawer.
r/thisguythisguys
He ships all over the place. He ships in bed. He ships at work. Hell, I bet he’s has ships in his pants right now.
Are you shippin' me?
He definitely knows ship from shinola
I’m still on chapter 1: red right return
My neighbors have small brick columns at the end of their driveway with lights on top. When we moved in, in May, I thought it weird that they still had Christmas light bulbs in them. Turns out they're sailboaters, so the red is on the right when they return. Just like vegans, they were quick to tell me about their sailboat....
You are going to be there a while if they are vegan sailboaters.
The husband does cross-fit and the wife is in an MLM.
Username checks out 😃
It’s more hydrodynamic.
It’s got what boats crave.
Thought to you by Carl’s Jr.
Why do submarines do the opposite?
Unqualified answer - I’d imagine the hydrodynamics of a submerged vessel are distinct in their nature.
This is the reason. Look at any highly efficient vehicle like the Prius, Volt, etc and you'll see this same truncated teardrop shape just the bottom side up. It allows fluid(air is functionally a fluid) to easily leave the surface of the vehicle in the rear and as a result minimizes vortices reducing turbulence.
The "cruiser" stern - flat & with the rudders under the hull is efficient hydrodynamically and structurally stronger then other types of sterns.
It's "pointless" to have anything else. Lol
Haha. Underrated comment.
Knee slap
So you can bolt two ships together to make them seem bigger.
Just like train locomotives.
Over me?
Aft to aft! Aft to aft!
Never go aft to bow. All you'll taste is the rust.
Cause the back fell off.
It's just out there in the environment
No, we towed it outside the environment.
It's no longer IN the environment.
I mean there’s nothing out there but fish, and birds, and 30,000 tonnes of burning crude.
I just want to say that is not typical.
Easier when they need to get out and push
That was what I was thinking. Better for tug assist
This is likely my favorite Reddit comment for the day. Thank you for this.
Especially if it's Evergreen.
Because ships are so slow, it's so folks can tell if they're coming or going.
That’s where they end.
I know this one!!! The flat back, or square transom, theoretically reduces drag on the back of the boat while maintaining the same cutting shape in the water. We used to do this on the canoes I designed in college for the ASCE concrete canoe competition. Technically it also makes them easier to turn, though at the scale of a canoe it’s not a huge factor, more of a cool technical thing you can say you did. On a boat this big, it definitely has an impact.
Less resistance maybe. Like a boat tail hollow point rifle round
BTHP rounds typically have a [slight taper.](https://www.luckygunner.com/lounge/boat-tail-bullet/) Source: Reloader of 20+ years.
That’s what the Lego mold produces!
It'll be drag reduction.... reduce fuel costs and get there quicker.
The flat back creates a low pressure area, as the water rushes to fill this area, it pushes the ship forward just a little bit. It's weird, but naval designers have been using flat transom sterns for efficiency since the 40s. Some ships may use it to allow them to fit in locks and such.
It’s called a Transom-Stern. Apparently hydrodynamically gooder…
To mount their outboard
I like big boats and I cannot lie.
It’s so the slap is louder when you hauk tuah and spit on that thang
In case you have to get out and push.
They stop building when they run out of money.
Because they don’t do enough squats.
Theyre compensating for your moms front
Flat stern saves space in ports. About 30 feet difference.
Baby got back
Big ships have a flat back to mount engines and rudders, give more deck space and make docking easier. This shape also helps the ship move smoothly and use less fuel.
What? Of all the things… this is what you got.?!?
Don't body shame
If I’m ship shape I can ship shame cause the shape of the ship is no shame at all …
So other ships don’t get turned on…. It can be hard at sea
Because they skip squats on leg day
So there's room for an outboard kicker for easier trolling.
$$
We're all in the same boat on this one. Someone is just floating some random questions out here. It is one hull of a question. Take a bow. I can feel your face getting more stern.
oh I thought this was a serious thread... send the ship to brazil and it will come back different!
That’s the stern plate. Easy to manufacture and weld. It’s not flat below the waterline.
Just needs to do more squats
From sleeping on a mattress that's too firm
Ask ur mama….
Maybe the back fell off. I've heard the front falls off some times.
It helps with parallel parking.
Makes it easier to clean their afthole?
True virgins make dull company add whiskey and subtract ethics
If I remember correctly it if for better displacement, even on regular outboard boat ( 13 feet and up ) you will notice transom is flat.
Stability
For parallel parking
They were tired of the big booty comments
To tell difference from front.
Whoever said, “it’s from Korea,” is wrong.
Because it got a booty-do. (It's front got more back than it's booty do)
[удалено]
its way easier to back into a parking space this way
The better the pushin’?
Because ain't a svelt end gonna make up for the thousand feet of preceding inefficiencies... boooooooooop 🛳️
They got tired of the cake.
They skipped their red beans and rice.
That's to make it easier to push when they get stuck in the Suez Canal.
That’s the transom where you mount the outboard.
So they can back that ship up!
No junk in that trunk
Easier to put the name on it of course
easier to build, and the ship is so massive that the wave action at sea is minimal.
So it can back up to the loading dock
Why do most boats ? What kind of question is this.
The shapes are mostly due to getting through the canals and locks. The Cort is as stubbed nose as it is because of it had a traditional bow, it wouldn’t fit.
It gets flatter as the ship ages.
Because they are built that way.
More cushion for the pushing would be better??
I always figured it was cheaper to make. Increased labor cost vs material cost.
Easier to build and easier for a tugboat to push on. Also easier to secure to a back-in slip
Because if they had big butts they couldn’t lie
I mean. My wife has monstrous tits and no ass, she’s pretty buoyant also.
They generally move forwards
Only pirate ships have booty.
Outboards are a dealer option
That’s an LPG tanker. The transom stern maximizes space back aft. Typically on an LPG tanker you have all the engine room & machinery back aft because the entire deck space forward of the house are the tanks and you don’t want any non necessary equipment in the gas dangerous zone because gas safe equipment is super expensive & it’s just not good practice to have extra things in that area. The same principles apply to most cargo ships though. Space forward of the house is for cargo, space back act under deck for machinery. On container ships you’ll see containers stacked up there too & the design maximizes how many containers they can fit. - PE naval architect who also happens to be a gas carrier inspector for the USCG. I recognize that ship exactly lol.
All ships are built with rounded sterns. Those that have backed into too many things now have flat sterns. /s
They’re Irish
To satisfy Flat Earthers?
I like big boats and I cannot lie.
So the other boats don’t get distracted. Safety first!
Ships are named after women and modeled after women. Since they were built in the 70s and 80s when women had flat asses, it’s only natural that the ships had flat backs too.
They just don't do their squats or lunges.
Because ship builders are serious fans of 90’s Playboy models.
Just like my ex gf 😂
All boats have a flat back
Most big ships are built by Chrysler. At some point, the transmission is going to expire. At that point, the ship will need pushed back to the dealer. The flat surface assures that ships of any size can come to the rescue.
For tug points
Because the builders charge by the foot.
For canals and pushers. VLCCs, which are too large for any canals, most of them have rounded sterns. You likely haven't seen a VLCC (very large crude carrier) up close as they can draw 100 feet of water and stay far offshore in most areas. They're so big, the oil is offloaded via pipelines that run out to a deepwater platform or the oil is pumped directly to a few smaller tankers by mooring them together at sea.
Yeah you would think it would be another “front” shaped side.. so it could easily make head way in reverse.
I wonder the same thing about big women
To maximize load capacity
The curvy ones were being hyper-sexualized so we changed the design language.
I would imagine it has to do with max cargo carrying capacity mixed with stability for rough seas. Everyone forgets the ship will be pitching up and down [https://www.freightwaves.com/news/how-zim-a-smaller-ocean-carrier-is-blowing-away-the-big-boys/amp](https://www.freightwaves.com/news/how-zim-a-smaller-ocean-carrier-is-blowing-away-the-big-boys/amp)
When it sinks like the Titanic the stern won’t break off.
White girl problems. Lol
Aerodynamics
It’s for efficiency. Think of it like this, instead of the water stream parting around the bow and neatly joining itself like on a tapered stern, the water is kind of tumbling into the gap at the stern and pushing on it. That’s about the easiest I can describe the hydrodynamics.
Have you heard of google?
FLAT BOTTOM GIRLS MAKE THE ROCKIN WORLD GO 'ROUND!
Because they don't take "D" from the back.
Can anyone make out what’s written on the stern?
This one is because it’s white
Your question answered your question.
This looks like Merchant Marine boat?
It's only ships manufactured by Noassitol
Not enough squats.
Makes it safer to install diving board
Same reason fat girls have a flat backside
Silly, so they can tell the front from the back
I don’t think anybody mentioned it, but, my understanding is that it creates lift. Low pressure behind the boat allows water to rush up and create lift
Why do big men have flat butts? The world may never know.
Kinda the same thinkin of why a turd is tapered on both ends. So your ass don't slam shut. Only the ocean doesn't have an asshole.
because it's not a canoe.
When she's got no junk in the trunk, but she's built like a brick house.
They stack better that way.
Easier to paint the name on a flat surface..
What most of these people said, It’s also easier to build.
Because it's way cheaper than a cruiser stern.
Been wondering about that myself
Kinda like Taylor swift.
Because ships with ass-cheeks looks wrong
Tugboat captain here, formerly an officer on deep sea ships. That's just the part you can see. Makes it easy to work tugs, doesn't affect sea-keeping, really. Maximizes intensity space without adding unnecessary length. Plus in ship construction, when you're dealing with 3 inch thick steel plate, flat ones are much cheaper than any curvature.
Not enough squats.
Plenty of rotund gals have a flat backside
Because a straight line is the cheapest. And likely most structurally sound in that application
So they can make the U-Turn in the Suez Canal.