rigger 47 Posted December 11, 2013 Share Posted December 11, 2013 Have worked on ocean passage towing a large barge on one engine / shaft due to the other engine having a major failure, made the end of passage through the Singapore Straits interesting. I heard the Aratere will not use Tory Ch and will have a tug escort through the Sounds. I believe there will also be restrictions relating to expected / forecast weather. Link to post Share on other sites
sow1ld 2 Posted December 11, 2013 Share Posted December 11, 2013 Def not allowed to use tory channel. Tugs on standby for Wellington and entire Northern entrance. Link to post Share on other sites
smithy09 50 Posted December 11, 2013 Share Posted December 11, 2013 Our Dynamic Positioning thrusters work 24/7 pretty much 360 days a year. Even in anchorage we stay on DP. Never broken a prop shaft. That's a rare one. Wouldn't like to second guess the pros but I bet the Singapore shipyard has something to do with it having witnessed some of the work in their yards... Not the first problem since the lengthening I have heard! Link to post Share on other sites
sow1ld 2 Posted December 11, 2013 Share Posted December 11, 2013 One of the workers in the dock had never used a grinder before! I heard a romour that they would never go back to that dry dock but it looks like. ..... Also I would say you get what you pay for but the lengthing thing couldn't really be classified as cheap! I think the sf of shaft has been reduced by the extra weight length wetted surface area props etc It's only a shaft for a 150mtr+ ship Link to post Share on other sites
wheels 543 Posted December 12, 2013 Author Share Posted December 12, 2013 I think the sf of shaft has been reduced by the extra weight length wetted surface area props etc It's only a shaft for a 150mtr+ ship Hmmm, wouldn't have thought so, but??? and I am no expert on something this size. But I would have thought that if the engine HP hasn't been increased, then surely the strain isn't any greater. If it is however, it's a bit of a worry that the Naval designers never thought of that. Link to post Share on other sites
smithy09 50 Posted December 12, 2013 Share Posted December 12, 2013 One of the workers in the dock had never used a grinder before! I heard a romour that they would never go back to that dry dock but it looks like. .....Also I would say you get what you pay for but the lengthing thing couldn't really be classified as cheap! I think the sf of shaft has been reduced by the extra weight length wetted surface area props etc It's only a shaft for a 150mtr+ ship Yes. Singapore shipyards. They can turn out some rubbish. I think their standards have dropped considerably over the years with cheaper and cheaper labour coming in from the subcontinent. At US$15 a day, you can't expect miracles! Used to be all local labour.. Not any more. And the charges are horrendous! Certainly not passed on to the workers.. Link to post Share on other sites
Bad Kitty 252 Posted December 12, 2013 Share Posted December 12, 2013 Re single engine ops, there's lots of single engine ships running around the world. Link to post Share on other sites
El Toro 97 Posted December 12, 2013 Share Posted December 12, 2013 The reason it has been rushed in to service and carrying freight only is every man and his dog wanting to get sh*t over the ditch is getting f**king crucified by the loss of this piece of sh*t boat. IIL have gone and hoevered up al the available space on the Straitsman resulting in blood bath for everyone else. Scuttle this pig of a ship, cause thats what it is, and get another new one. Link to post Share on other sites
rigger 47 Posted December 12, 2013 Share Posted December 12, 2013 The reason it has been rushed in to service and carrying freight only is every man and his dog wanting to get sh*t over the ditch is getting f**king crucified by the loss of this piece of sh*t boat.IIL have gone and hoevered up al the available space on the Straitsman resulting in blood bath for everyone else. Scuttle this pig of a ship, cause thats what it is, and get another new one. If it can be loaded in a container you could use Pacifica. Link to post Share on other sites
El Toro 97 Posted December 12, 2013 Share Posted December 12, 2013 Yes that is true, but cars cant, nor can any freight collected south of Auckland, unless you truck it backwards....and then there is the major issue of massive congestion at LYT at the moment, 2 coal ships as well as 2 PCC plus whatever else all in at same time. Is a warzone down there at the moment to....Im off to solve that problem in morning Link to post Share on other sites
wheels 543 Posted December 12, 2013 Author Share Posted December 12, 2013 Re single engine ops, there's lots of single engine ships running around the world. Yes indeed, but the concern was that this now has one prop on one side of the vessel, so steering her is greatly affected apparently. A Tug has to help berth her. Plus it was more the fact that if one shaft sheared off and maybe because of some cause due to lengthening and as sow1ld said, extra load on the drive system, well there is going to be a lot more load on the one existing drive now. I expect all that is why she is restricted to freight only. Link to post Share on other sites
Steve Pope 243 Posted December 12, 2013 Share Posted December 12, 2013 perhaps they could put a locator beacon on the prop that is left, would make it easier to locate if it had the same fault. Link to post Share on other sites
rigger 47 Posted December 12, 2013 Share Posted December 12, 2013 Yes that is true, but cars cant, nor can any freight collected south of Auckland, unless you truck it backwards....and then there is the major issue of massive congestion at LYT at the moment, 2 coal ships as well as 2 PCC plus whatever else all in at same time. Is a warzone down there at the moment to....Im off to solve that problem in morning Freight could go via Tauranga if needed. Pacfica has a schedule with other vessels that includes Napier, Nelson, Dunedin, Bluff, Nelson, New Plymouth. Cars can go in containers but not sure on the costs for short haul - probably more costly than loading on a truck and driving on / off. Good luck on Lyt - you could push for Timaru to be used instead, though back shipping might be a hassle. Though the Lyt truck delays I'm hearing are longer than driving from Timaru to ChCh takes. Link to post Share on other sites
sow1ld 2 Posted December 12, 2013 Share Posted December 12, 2013 The orginal safety factor built into the shafts has now some what been reduced by being longer heavier carrying more freight having higher thrust props and now having 2 smaller but extra me's feeding the board. The gearboxes where thought to be the weakiest link so there was never the option of having 6mes supplying the board at one time but having extra redundancy from the additional 2mes after the lengthing has ment at times in order to meet timetable more mws being used than previously. The main reason Tugs are required on one shaft is that the terry isn't dp or cpp she's fixed prop so requires the shafts to be fully stopped before going to astern from forwards during that transition with only one shaft she would be a sitting duck with any breeze plus her ability to haul up is compromised too Link to post Share on other sites
smithy09 50 Posted December 12, 2013 Share Posted December 12, 2013 Are you marine crew sow1ld? What do you do? Interesting comments, thanks for the updates! Link to post Share on other sites
grant 40 Posted December 12, 2013 Share Posted December 12, 2013 Any news on where the shaft sheared yet? about 100 mm (ish) out of the boss on the prop Link to post Share on other sites
wheels 543 Posted December 12, 2013 Author Share Posted December 12, 2013 Not really a concern on open passage wheels - has very little steering effect steady steaming. No I was meaning in close quarters type steering, like turning around for berthing, actual berthing etc. And to echo smithy, yes thank-you for the updates sow1ld. Nice to have info from closer related sources. Link to post Share on other sites
grant 40 Posted December 12, 2013 Share Posted December 12, 2013 here goes... Link to post Share on other sites
wheels 543 Posted December 12, 2013 Author Share Posted December 12, 2013 Sorry. I am terrible at writing and conveying what I am thinking. It often makes sense in my head when I type it, but I struggle to find the words to convey what I am thinking and often when I read a post back to myself much later, I think, who the hell wrote that. Then I note the name and think oops that was me, oh dear that is badly written. Link to post Share on other sites
sow1ld 2 Posted December 12, 2013 Share Posted December 12, 2013 Nice pix! I was going to say it sheared between the p bracket and the prop but the pic has beaten me to it! Im one short course away from getting my mec3 (3rd engineer) on the Aratere but I've worked on all the ferries except the hura including all the Blue bridge. I share the same agony as Smithy in that our work timetables always seem to clash with our racing racing calendar! It's even more agonizing when I can see them racing on the Harbour and I have to go down the hole doh! Link to post Share on other sites
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