DALI (IMO: 9697428) is a Container Ship and is sailing under the flag of Singapore. Her length overall (LOA) is 299.92 meters and her width is 48.2 meters [1]. Based on the track, it appears the ship changed course slightly and slowed as it approached the bridge [2]. [1] https://www.marinetraffic.com/en/ais/details/ships/shipid:28... [2] https://www.marinetraffic.com/en/ais/home/shipid:2810451/zoo...
Baltimore's Key Bridge struck by cargo ship, collapses
611–620 of 1001 posts
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#612Earlier quoted context omitted.
Was there a harbor pilot on board, or the normal ship pilot? Were there tug boats helping with the exit? I have often felt that the harbor protocols were overkill, but this is one of the times they could have helped.
Once the ship is under way I don't think the tugs hang around. They are just for the push away from the dock and initial turns.
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#613Youtube tracking analysis from a knowledgeable mariner. He says that at about 1:24 AM the ship loses power (from video feed) while traveling 8.5 knots. at 1:25.30 power is restored. at 12:25.59 the ship shows smoke. The ship has already drifted in the channel. It is believed that at this time the ship applied full reverse power as evidenced by the black smoke. (My analysis: the ship drifted but hasn't turned in the c…
I'm once again impressed that subject matter experts are out there on every topic, and they are often capable of quickly and accurately disseminating information about an event far better than the local news.
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#614Earlier quoted context omitted.
They keep reporting this, and maybe it was because the video was sped up, but it looked like there was still traffic going across until very close to the collision
The last car crossing that I can see clears the span about 1:28:06; the bridge collapses about 1:28:48. That's about 40 seconds of gap between the traffic and the collapse. I haven't timed how frequently cars are coming, but it seems to be about every 30 seconds or so, which--combined with the time it takes to cross the bridge--is evidence that a bridge closure was effected just before the bridge collapse.
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#615Somehow I find it surprising how completely the bridge collapsed after the damage. I understand that a container ship collision is serious, but you could imagine a scenarios where the bridge slumps or buckles but doesn’t just disintegrate like that. It’s surprising that ships capable of doing this damage were probably regularly driving past it, and its safety as a thoroughfare depended entirely on those collisions no…
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#616Earlier quoted context omitted.
I'm not sure what configuration of props a ship like this has, but in my experience with a 40ft sailboat with a single propeller you have absolutely no rudder authority while reversing. I've read that some large ships also are direct drive--there's no transmission between the engine and the propeller, so "reversing" (if it's even possible) entails shutting down the engine and restarting it in reverse. This can be don…
> in my experience with a 40ft sailboat with a single propeller you have absolutely no rudder authority while reversing. In general it depends on the rudders and the boat. Longer keeled boats don't respond well in reverse at all but more modern boats (like mine, 1990) will do better but will still need some way to have steerage. I can certainly manouver around the marina in reverse, it's just harder than forwards and…
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#617Youtube tracking analysis from a knowledgeable mariner. He says that at about 1:24 AM the ship loses power (from video feed) while traveling 8.5 knots. at 1:25.30 power is restored. at 12:25.59 the ship shows smoke. The ship has already drifted in the channel. It is believed that at this time the ship applied full reverse power as evidenced by the black smoke. (My analysis: the ship drifted but hasn't turned in the c…
I'm once again impressed that subject matter experts are out there on every topic, and they are often capable of quickly and accurately disseminating information about an event far better than the local news.
That’s such a ludicrously low bar that I’m not even sure this would qualify as a compliment to these alternative producers.
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#618Just removing the detritus of the current bridge sounds like a multi month affair.
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#619Youtube tracking analysis from a knowledgeable mariner. He says that at about 1:24 AM the ship loses power (from video feed) while traveling 8.5 knots. at 1:25.30 power is restored. at 12:25.59 the ship shows smoke. The ship has already drifted in the channel. It is believed that at this time the ship applied full reverse power as evidenced by the black smoke. (My analysis: the ship drifted but hasn't turned in the c…
How common are power outages on ships? I get that the captain might not have responded to it correctly but that seems like a thing that shouldn't happen, at least in my completely uneducated opinion.
I think it was something like bad fuel killing the generator.
Re: Baltimore's Key Bridge struck by cargo ship, collapses
#620Youtube tracking analysis from a knowledgeable mariner. He says that at about 1:24 AM the ship loses power (from video feed) while traveling 8.5 knots. at 1:25.30 power is restored. at 12:25.59 the ship shows smoke. The ship has already drifted in the channel. It is believed that at this time the ship applied full reverse power as evidenced by the black smoke. (My analysis: the ship drifted but hasn't turned in the c…