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re: Francis Scott Key Bridge in Baltimore has collapsed - container ship wrecked into it
Posted on 3/27/24 at 10:26 pm to baldona
Posted on 3/27/24 at 10:26 pm to baldona
quote:none of these things happen that quickly. Think about the size of the prop and how long it takes to get it up to speed. Maximum revolutions of the propeller
There maybe a better reason, but if the ship was veering starboard with forward thrust, why not reverse thrust immediately to pull it back to port? Im not suggesting the ship actually would reverse, I’m saying the screw reversing direction would generally steer the ship the other direction.
may only be like 80rpm. These ships have less power in reverse than forward. Transverse thrust of the prop is not immediate and takes longer to take effect if the ship is moving forward. also most ships are right handed meaning when going astern the bow would go to starboard.
1
Posted on 3/27/24 at 10:48 pm to achenator
quote:
none of these things happen that quickly. Think about the size of the prop and how long it takes to get it up to speed. Maximum revolutions of the propeller may only be like 80rpm. These ships have less power in reverse than forward. Transverse thrust of the prop is not immediate and takes longer to take effect if the ship is moving forward. also most ships are right handed meaning when going astern the bow would go to starboard.
Certainly and I understand. Then they shouldn’t be allowed in port without assistance from a tug.
It’s laughable to have one engine go down and this to happen. Either have incredible redundancy internally, or have it with external support.
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