Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-08-2016, 05:52   #16
Registered User
 
ontherocks83's Avatar

Join Date: Aug 2013
Location: Massachusetts
Boat: Checkmate Strobe 201
Posts: 1,591
Re: When supertankers collide

pfffff, no worries, that'll buff out.
Attached Thumbnails
Click image for larger version

Name:	CpB9k-dXEAAZ7wc.jpg
Views:	109
Size:	134.6 KB
ID:	129071  
__________________

__________________
-Si Vis Pacem Para Bellum
-Molon Labe
ontherocks83 is offline   Reply With Quote
Old 07-08-2016, 19:35   #17
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 8,688
Re: When supertankers collide

El Pinguino, good point about GPS location setup. That answers the first question I had about apparent separation.
__________________

__________________
rgleason is offline   Reply With Quote
Old 07-08-2016, 20:05   #18
Registered User

Join Date: Jan 2012
Boat: Catalina 470
Posts: 1,414
Re: When supertankers collide

This is just a small snapshot of crossing Singapore straits, keep in mind some of these vessels are moving at 12+ knots.

Sent from my vivo Y35 using Cruisers Sailing Forum mobile app
Attached Thumbnails
Click image for larger version

Name:	1470625384853.jpg
Views:	76
Size:	51.4 KB
ID:	129119  
__________________
daletournier is online now   Reply With Quote
Old 07-08-2016, 20:21   #19
Now on the Dark Side: Stink Potter.
 
CSY Man's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Location: Ft. Lauderdale
Boat: Between boats, taking a break.
Posts: 3,368
Images: 114
Re: When supertankers collide

Not much to add, but in my younger days I was a helmsman on those Super Tankers: ULCC.
Long delay turning the wheel over and even longer trying to stop by going full reverse.
All you get for going reverse is a slight vibration, if you are lucky
A fully loaded tanker takes a mile or two to stop if lucky.
An empty tanker less, but floating high in the water and the propeller half airborne, it could be longer.
We never had those crash-stop problems however, lots of tugs attached, slow speed operations and Proffesional harbor Pilots.
Not sure what happened above but I have my theories...(rolling eyes now)
__________________
Life is sexually transmitted
www.odincharters.com
www.susanhanssen.com
CSY Man is offline   Reply With Quote
Old 08-08-2016, 04:21   #20
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 8,688
Re: When supertankers collide

Good testing ground for ais alerts and controls? Or would it just overwhelm the display. The situations look close enough so that the position of the GPS should be accounted for, and the locations of the GPS had best be accurate.
__________________
rgleason is offline   Reply With Quote
Old 08-08-2016, 04:45   #21
Registered User

Join Date: Jan 2012
Boat: Catalina 470
Posts: 1,414
Re: When supertankers collide

Quote:
Originally Posted by rgleason View Post
Good testing ground for ais alerts and controls? Or would it just overwhelm the display. The situations look close enough so that the position of the GPS should be accounted for, and the locations of the GPS had best be accurate.
That's my point, in my experience it overwhelms ais, going with the traffic isnt as bad, you can use your filters more successfully ( still not great) but crossing the straight is totally different, these ships are moving fast.

Sent from my vivo Y35 using Cruisers Sailing Forum mobile app
__________________
daletournier is online now   Reply With Quote
Old 08-08-2016, 19:24   #22
Sponsoring Vendor
 
Neptune's Gear's Avatar

Community Sponsor

Join Date: Oct 2012
Location: Gulf Harbour, New Zealand
Boat: Farr Phase 4, 12.8m
Posts: 988
Re: When supertankers collide

I recall crossing from the Indonesian side towards Singapore, grey day, rain and visibility to less than a mile. I really would not have wanted to be without the Ais, AND the radar, like all safe navigation practice, you should never rely on a singe source of data.

Sent from my D5503 using Cruisers Sailing Forum mobile app
__________________
Matt Paulin
Neptunes Gear Ltd
www.neptunes-gear.com
Neptune's Gear is offline   Reply With Quote
Old 08-08-2016, 19:53   #23
Registered User
 
El Pinguino's Avatar

Join Date: Aug 2013
Location: Back on Campo el Pinguino.. Boat in Puerto Williams, Chile
Boat: 39' Westerly Sealord
Posts: 3,836
Re: When supertankers collide

I'm sure they would have been using ECDIS which would have had the radar overlaid on top of the AIS info on top of the electronic chart or V versa..... they may even have been looking out the windows.

Rule #1 do not pass close ahead of ULCCs....

Rule #2 refer Rule #1

It would be interesting to read the VHF transcript.
El Pinguino is offline   Reply With Quote
Old 08-08-2016, 19:55   #24
Registered User

Join Date: May 2011
Location: Toronto
Boat: Sandpiper 565
Posts: 2,895
Re: When supertankers collide

Never mind self-driving cars... I'd like to see ship computers taking in all the available data (position, speed, direction, wind, current, ship lengths) to provide advance warning and coordination to the bridges.
__________________
Lake-Effect is offline   Reply With Quote
Old 08-08-2016, 21:03   #25
Registered User
 
El Pinguino's Avatar

Join Date: Aug 2013
Location: Back on Campo el Pinguino.. Boat in Puerto Williams, Chile
Boat: 39' Westerly Sealord
Posts: 3,836
Re: When supertankers collide

From here... https://www.sailors-club.net/compone...ngapore-strait

'The local authorities started investigation for the root cause of the accident. According to preliminary information, responsible for the collision was the duty officer of very large crude carrier Dream, who was neglecting the ColReg rules, as container ship MSC Alexandra was proceeding from the right board and have to be released by the tanker to enter in the separation scheme. On other side, the lack of communication and misunderstanding from the both duty officers was in the root cause of the collision.'
El Pinguino is offline   Reply With Quote
Old 09-08-2016, 00:00   #26
Registered User

Join Date: Feb 2016
Location: Great Lakes
Boat: Mid size sloop rigged
Posts: 182
Re: When supertankers collide

What I observed watching the replay, was the Alexandria making a mild alteration to Starboard. If that wasn't readily apparent to the Dream II (forgive me if I got the names wrong), then the Dream II would have likely plotted the Alexandria's course to pass astern. Am I the only one that sees that? Maybe I need less cocktails.
__________________
Ungvar is offline   Reply With Quote
Old 09-08-2016, 00:21   #27
Registered User

Join Date: Feb 2016
Location: Great Lakes
Boat: Mid size sloop rigged
Posts: 182
Re: When supertankers collide

Here is what I think happened. The Captain was not on the bridge, or at least not actively navigating either ship. The Alexandria was continuing on her planned route with her mild alteration to starboard, in the belief the Dream 2 would yield, being on the Port Side.

The watch officer on Dream II plotted the Alexandrias course and determined that no risk of collision existed but failed to track her actual progress.

You guys and your conspiracy's about AIS. The navigators just weren't paying enough attention.
__________________

__________________
Ungvar is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What COLREG rule was broken here (video) - 2 ships collide in Suez Canal avb3 Rules of the Road, Regulations & Red Tape 51 06-11-2014 05:50
Nuclear submarines collide in Atlantic GordMay Off Topic Forum 23 17-02-2009 13:00


Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:50.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.