It’s not clear what the seas were at the time.
The update said weather at the time was reported as wind force 4 on the Beaufort Wind Scale, corresponding to 13-18 mph winds, with north-westerly seas of 5 to 6 meters and a “long high swell”.
Weather maps around the time of the incident, however, show significant wave heights of up to 16 meters associated with the low pressure system.
The thought arises if parametric rolling was an issue here. Not that you need it with 16 meter waves but nevertheless.
Maybe the ship was loaded/secured with 14000 TEUs as per regulations with twist locks and rods everywhere and the Master checked everything as per regulations of course and then the ship heeled a little in good weather and most of the deck cargo fell off, etc. There was bad weather/seas in the vicinity and it was decided to blame it for everything. Why not?
That is what we call BS. Grow up.
So what is parametric rolling? I have never heard of it. And would deck cargo fall off due to it? Or is it just bad weather that looks small on a big ship, so you go too fast and don’t hear what is happening at the bow? Maybe they just went too fast in the bad weather. And if you suddenly start to roll for mysterious reasons, you should of course slow down and stop.
I am stumped, baffled to say the least! Are you sarcastic or do you really not know what parametric rolling is? If you donot know what it is then your maritime knowledge is seriously dated. No wonder the things you write.
He’s more of an expert at parametric trolling.
My ships are medium size and not subject to parametric rolling or what you call it and we slow down in severe weather or avoid it, if we can. In this ONE A case the very big ship type was known to be subject to parametric rolling and it headed at full speed into a storm a dark night … and started to roll (parametrically?) and things got wrong. Incompetent crew and owner? No, Master should be jailed! They should simply have slowed down and avoided the bad weather.
I’d think it would be unlikely that the ship was in 16 meter seas. More likely it was in that system but outside the worse of it.
This ship was located approximately 1,600 nautical miles northwest of Hawaii at the time.
Hawaii is about 20 N 155 W (almost due south of Kodiak Island). Each 10 degree line is 600 miles.
Maybe this kind of ships??
Parametric rolling isn’t limited to rough weather, though it does seem to be more prevalent on post-panamax ships. Your boats probably won’t be affected too much.
If you’re interested, you can read more at the following link. You probably won’t learn anything since it seems like you already know everything: https://www.steamshipmutual.com/ParametricRoll.pdf
After having studied parametric rolling on the Internet I wonder if it really exists. The MARIN model tests I have my doubts about. I think the real cause of the incident is going much too fast in severe weather and in the night. The bridge is far away from the bow and the crew doesn’t know what goes on at the front of the ship. They just sit and sleep on the bridge.
Have you ever worked on a container ship? Or any ship for that matter? You’re like the Qannon of the maritime world with these takes.
Uhhhh look at a picture of One Apus…the bridge is forward. I know what’s happening to the bow from my stateroom on a suezmax tanker.
Some have to gut the fish to get the hook out.
so the Captain weighs all the containers as they load them, then finds a couple of heavy ones coming late so they unload the ship and start again?
If an aircraft crashes on takeoff because of wrong weight we put the pilot in prison or the airport for under declaring the weigh data they sent him?
One of my mates that flew jumbos OZ to USA for years said they always had 10 ton more weight than shown mainly due to the averaging of passenger weight and all the crap they carry on board.
He calculated the 10 ton from the the aircraft performance specs not being correct till 10 tons of fuel burnt off.
I have built and operated many ships including container ships since 1960’s. My tankers had the bridge aft (far away from the bow) and my ropaxes have the bridge forward, so you can look down on the focsle. The bridge of the One Apus is >150 m from the bow, which you cannot see due to stacks of containers in between. The One Apus bridge crew could only see the horizon around them and tops of container stacks. They were just going too fast in severe weather. Parametric rolling - ROTFL!
Oh boy what have I started with my simple suggestion that perhaps parametric rolling was in play. Me and my big mouth. But happy to learn that it doesn’t exist, it’s a hoax…
Yes, parametric rolling is a new trick to fool marine incident investigators, when ships and cargoes are damaged at sea. Before it was rogue waves and now it is parametric rolling. When my ships are sunk by sabotage in the middle of the night, you can always blame them for it.
I don’t disagree with Heiwa that ship speed may have had a play in this debacle. Weather never participates in the voyage plan,. I always tried to avoid it, but it has other ideas sometimes. I do disagree with blaming everyone but the cook. The cook caused it. LMAO
