Albert Tatlock Posted September 5, 2023 Author Share Posted September 5, 2023 Gross Tonnage is a common measure used rather widely. For example, it is also an approximate measure of how many fat birds there are in the Rovers on a Saturday night given by the number of floorboards they displace. 3 Quote Link to comment Share on other sites More sharing options...
John Wright Posted September 5, 2023 Share Posted September 5, 2023 40 minutes ago, Capt_Mainwaring said: That's not twice the weight though. GRT is a measure of volume, not mass. You need displacement for the ship's weight but can't seem to find the info for BMC or Manxman. The original poster said nearly double. Mx is nearly double Ben. I’m aware GT is a measure of displacement. But it’s a good approximation. GT of a boat is equal to the weight of the water it displaces when it is put in water. That displacement is the weight of the boat. You say it yourself. There’s a direct correlation between the weight of water displaced and volume. I litre = Ikg. A floating ship displaces the volume ( weight ) of water the ship weighs. Quote Link to comment Share on other sites More sharing options...
Capt_Mainwaring Posted September 5, 2023 Share Posted September 5, 2023 18 minutes ago, John Wright said: The original poster said nearly double. Mx is nearly double Ben. I’m aware GT is a measure of displacement. But it’s a good approximation. GT of a boat is equal to the weight of the water it displaces when it is put in water. That displacement is the weight of the boat. You say it yourself. There’s a direct correlation between the weight of water displaced and volume. I litre = Ikg. A floating ship displaces the volume ( weight ) of water the ship weighs. You are confusing GRT with displacement. 2 x GRT does not equate to 2 x displacement. Gross tonnage is a measure of a ship's overall internal volume and is determined by dividing by 100 the contents, in cubic feet, of the vessel's enclosed spaces. GT applies to the vessel, not to cargo. It measures the ship's volume and has nothing to do with weight. Quote Link to comment Share on other sites More sharing options...
John Wright Posted September 5, 2023 Share Posted September 5, 2023 22 minutes ago, Capt_Mainwaring said: You are confusing GRT with displacement. 2 x GRT does not equate to 2 x displacement. Gross tonnage is a measure of a ship's overall internal volume and is determined by dividing by 100 the contents, in cubic feet, of the vessel's enclosed spaces. GT applies to the vessel, not to cargo. It measures the ship's volume and has nothing to do with weight. No. I’m not. I’ve never used GRT in my posts, and I’m aware of the differences GT, displacement, GRT and mass. And the changes caused by Temperature, atmospheric pressure and cargo carried, as appropriate. Quote Link to comment Share on other sites More sharing options...
Capt_Mainwaring Posted September 5, 2023 Share Posted September 5, 2023 Just now, John Wright said: No. I’m not. I’ve never used GRT in my posts, and I’m aware of the differences GT, displacement, GRT and mass. And the changes caused by Temperature, atmospheric pressure and cargo carried, as appropriate. So what is the displacement of each of BMC and Manxman? And what is the Gross Tonnage of BMC and Manxman? The Gross Tonnage may be roughly twice, but I don't believe the displacement will be. Quote Link to comment Share on other sites More sharing options...
Capt_Mainwaring Posted September 5, 2023 Share Posted September 5, 2023 Quick example: Titanic 46,329GT, 52,310 Tons Displacement Mauretania 31,938GT, 44,610 Tons Displacement So whilst Titanic was 45% more in terms of Gross Tonnage, she was only 17% heavier. Quote Link to comment Share on other sites More sharing options...
cheesypeas Posted September 5, 2023 Share Posted September 5, 2023 Does it fecking matter ? The Manxman is much bigger. I think we all get it. 6 Quote Link to comment Share on other sites More sharing options...
Jarndyce Posted September 5, 2023 Share Posted September 5, 2023 4 minutes ago, cheesypeas said: Does it fecking matter ? Of course it does! It’s a “being right and having the last word” contest! 4 2 Quote Link to comment Share on other sites More sharing options...
Roger Mexico Posted September 5, 2023 Share Posted September 5, 2023 13 hours ago, Ringy Rose said: The bloke in charge when the Manxman was ordered, Mark Woodward, had been there since Sea Containers days. And the new Ops Manager is from Dubai. If you look at the Steam Packet's own timeline though, the tender process started in October 2019, well after the Steam Packet had been acquired by Manx Government in May 2018. It was known that a new boat was in the pipeline (and this was discussed on MF at the time of acquisition) but final decisions and the go-ahead would have been under IOMG influence. The fact that long-timers Woodward and John Watt were both retired at the same time in July 2021 (Woodward was probably only late 50s) and that Woodward was replaced by a civil servant rather than someone from another shipping company suggests a desire for closer control. How much influence this had over the specification of the new boat is another matter and the pre-IOMG Steam Packet was just as capable of making bad decisions as its successor. But the process may not have been free from government influence. Incidentally, while Kane Taha, the Operations Director, worked in Dubai for six years before that, prior to that he was a Captain etc with the Steam Packet from 2000-15. 1 Quote Link to comment Share on other sites More sharing options...
Albert Tatlock Posted September 5, 2023 Author Share Posted September 5, 2023 1 hour ago, cheesypeas said: Does it fecking matter ? The Manxman is much bigger. I think we all get it. But maybe the Ben is just...far away? 1 Quote Link to comment Share on other sites More sharing options...
cheesypeas Posted September 5, 2023 Share Posted September 5, 2023 4 minutes ago, Albert Tatlock said: But maybe the Ben is just...far away? Go on…go on….go on…..go on…….. 1 Quote Link to comment Share on other sites More sharing options...
Amadeus Posted September 5, 2023 Share Posted September 5, 2023 1 Quote Link to comment Share on other sites More sharing options...
KERED Posted September 5, 2023 Share Posted September 5, 2023 6 hours ago, Jarndyce said: Of course it does! It’s a “being right and having the last word” contest! Oh no it isn't! Quote Link to comment Share on other sites More sharing options...
Jarndyce Posted September 5, 2023 Share Posted September 5, 2023 56 minutes ago, KERED said: 7 hours ago, Jarndyce said: Of course it does! It’s a “being right and having the last word” contest! Oh no it isn't! I’ve told you once… Quote Link to comment Share on other sites More sharing options...
Ringy Rose Posted September 5, 2023 Share Posted September 5, 2023 (edited) 10 hours ago, Roger Mexico said: Incidentally, while Kane Taha, the Operations Director, worked in Dubai for six years before that, prior to that he was a Captain etc with the Steam Packet from 2000-15. Indeed he was. Which rather undermines the whole “they’ve stuffed the Steam Packet with idiot civil servants who know nothing of the sea” argument. The MD isn’t a classic civil servant either, what with his degree and career in marine engineering. Still, I’m sure people on Manx Forums know better about ships. Edited September 5, 2023 by Ringy Rose 3 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.