Page 3 of 17 FirstFirst 1234567813 ... LastLast
Results 21 to 30 of 164
  1. #21
    Join Date
    Feb 2004
    Location
    Boat (now back in) the Clyde
    Posts
    5,570

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by Minn View Post
    I can bore for Britain on this.

    There are four «*solutions*»:

    1. Buy low sulphur fuel oil. That’s what my outfit are doing. There are issues with this that I can witter on about if asked - there are some crude oils that have a very low sulphur content (some Chinese and West African crudes) and there are several arrangements for making low sulphur fuel oil from higher sulphur crudes but the fuel oils tend to be unstable or incompatible or both.

    2. Burn marine gas oil. That’s basically the same stuff as road diesel. You can probably spot the problem given that the world merchant fleet uses about the same amount of fuel as diesel road vehicles.., there are also exotic engineering issues

    3. Fit closed loop scrubbers. Significantly expensive - say US$ 6M per ship plus operating costs including proper sludge disposal which few ports are set up to handle as well as supply of chemicals.

    4. Fit open loop scrubbers and simply wash the excess sulphur oxides into the sea. The cheap and dirty solution, already banned in many places, including the entire coast of China...
    Interesting and informative, thanks

    All this just shows how the focus on a narrow view of emissions targets (eg cars), ignores the big issues around large ship and aircraft emissions, which as cross national boundaries have been conveniently ignored until recently.
    It is good that some people with foresight, conscience and stamina have managed to start some progress in these areas.
    Though as others note, ultimately buying less short term disposable goods and travelling less will be the only really effective measures.

  2. #22
    Join Date
    Feb 2007
    Location
    West London
    Posts
    2,610

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by Minn View Post
    I can bore for Britain on this.

    There are four «*solutions*»:

    1. Buy low sulphur fuel oil. That’s what my outfit are doing. There are issues with this that I can witter on about if asked - there are some crude oils that have a very low sulphur content (some Chinese and West African crudes) and there are several arrangements for making low sulphur fuel oil from higher sulphur crudes but the fuel oils tend to be unstable or incompatible or both.

    2. Burn marine gas oil. That’s basically the same stuff as road diesel. You can probably spot the problem given that the world merchant fleet uses about the same amount of fuel as diesel road vehicles.., there are also exotic engineering issues

    3. Fit closed loop scrubbers. Significantly expensive - say US$ 6M per ship plus operating costs including proper sludge disposal which few ports are set up to handle as well as supply of chemicals.

    4. Fit open loop scrubbers and simply wash the excess sulphur oxides into the sea. The cheap and dirty solution, already banned in many places, including the entire coast of China...
    You forgot (5) go back to sails.

  3. #23
    Join Date
    Aug 2013
    Location
    SW Scotland
    Posts
    19,540

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by scotty123 View Post
    You forgot (5) go back to sails.
    Sails are boring. Go for rotors.

    "Seamen are always wanting to do things the proper way; and I like to do them my way."

  4. #24
    Join Date
    Mar 2007
    Location
    Atlantic
    Posts
    20,874

    Default Re: Thank St Greta for saving us

    Im fascinated by the concept of Russian 'Nuclear Powered Icebreaker'.

    What fun......

  5. #25
    Join Date
    Jul 2008
    Location
    East coast UK. Mostly. Sometimes the Philippines
    Posts
    9,525

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by capnsensible View Post
    Im fascinated by the concept of Russian 'Nuclear Powered Icebreaker'.

    What fun......
    They have had them for decades... good idea I think

  6. #26
    Join Date
    Jul 2008
    Location
    East coast UK. Mostly. Sometimes the Philippines
    Posts
    9,525

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by scotty123 View Post
    You forgot (5) go back to sails.
    Well I did say that I can bore for Britain on this...

    https://splash247.com/2035-global-wa...-anagram-soup/

    https://splash247.com/mind-sulphur-cap/

    and particularly...

    https://splash247.com/practical-aspects-imo-mepc-72/

    https://splash247.com/sleeve-oil-sub...-post-mepc-72/
    Last edited by Minn; 23-08-19 at 21:49.

  7. #27
    Join Date
    Sep 2010
    Location
    Where life is good
    Posts
    13,898

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by longjohnsilver View Post
    Are we all supposed to know what oircsaviour means?
    I wasn’t wearng glasses and couldn’t see the typo...
    Life is too short to drink bad wine.

  8. #28
    Join Date
    Sep 2010
    Location
    Where life is good
    Posts
    13,898

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by Minn View Post
    As one of «*them*» I’m happy to tell you that as of the first of January next year «*they*» will either burn low sulphur fuel oil or «*they*» will indeed «*have some form of filter system in the funnels to remove it*».
    Did the industry "volunteer " or was if forced on you by the IMO?.... (actually I know the answer)



    But that is thread drift.
    We as boat owners are about to face more regulations because St Greta and her likes have suddenly thought to focus on something that really is of no consequence in the overall scheme of things.
    Life is too short to drink bad wine.

  9. #29
    Join Date
    Sep 2010
    Location
    Where life is good
    Posts
    13,898

    Default Re: Thank St Greta for saving us

    Quote Originally Posted by dunedin View Post
    Interesting and informative, thanks

    All this just shows how the focus on a narrow view of emissions targets (eg cars), ignores the big issues around large ship and aircraft emissions, which as cross national boundaries have been conveniently ignored until recently.
    It is good that some people with foresight, conscience and stamina have managed to start some progress in these areas.
    Though as others note, ultimately buying less short term disposable goods and travelling less will be the only really effective measures.
    The worlds marine fleet produces about as much pollution as Germany.
    That may sould a lot... But compared to India, Brazil, China, America it is a cigarette next to a bombfire. And, marine transport is the absolutely most fuel efficient way to move stuff. It takes roughly 1hp per tonne to move on water... Compared to an HGV packing 300hp to move 25 tonnes.
    Life is too short to drink bad wine.

  10. #30
    Join Date
    Mar 2015
    Location
    Isle of Eigg
    Posts
    7,295

    Default Re: Thank St Greta for saving us

    Asda: every little counts.

Page 3 of 17 FirstFirst 1234567813 ... LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Latest YBW News

Find Boats For Sale

to
to