Air Pollution Caused By Shipping.

[Lewis McColl]

Nuclear power for merchant vessels was tried as far back as 1957. I think it was the Savannahth.jpg It was commercially not viable as she was very limited as to where she was allowed to trade.
A few vessels are now using LNG as the main fuel source as the emissions are greatly reduced.
https://www.intertanko.com/upload/pr...rnal%20PDF.pdf

[Ivan Cloherty]

Yes Lewis I know about the Savannah, saw her in the flesh, a beautiful vessel and yes uneconomical in nuclear operation, there was talk of taking the nuclear plant out and fitting turbines, but her dwcc in any case was too small to make her commercially viable, I think the nuclear plant was just flag waving exercise that hadn't been thought through because she was banned from many ports, but she was fully crewed and perhaps even overmanned. I was just painting a scenario of crewless vessels using nuclear power in today's uncertain world where even kids can hack into the US Defence and Space computers just for fun, just imagine what people with malice could do, just saying it doesn't bear thinking about. Am aware of the LNG newbuilds and recent conversions but still in its infancy and the majority of ports not geared to replenishing them yet. A couple of bunkering companies have invested in LNG bunkering sea tankers and others invested in road tankers, so perhaps that is the way it is going to go

[Des Taff Jenkins]

Hi Jim.
They have had similar problems here in the Passenger berth in Sydney Harbour, people in the suburbs like Balmain have been complaining for years, I think they were going to go on shore power, haven't heard anything for quite a while now.
Cheers Des

[j.sabourn]

Des if some of these people saw the pollution at sea on a production oil and gas field they would be shouting double. No matter what you hear to the contrary some of the pollution emitting from platforms and rigs by what they call flaring off can be rather much. The escaping gases whilst harnessing the black gold or unseen gases has to be disposed of, and the only way is by burning them. Used to ignited I am told originally by a flaming arrow fired from a bow, before going to a flare gun, today with all the modern aids will be an electrical emission. Now that’s real progress. However the smoke is still there. Cheers JWS.

[j.sabourn]

#10. Just imagine Ivan everyone having to go back to basics andlearn the Rule of the Road. E.g. a vessel close hauled on the port tack shall keep clear of the one close hauled on the starboard tack, and a vessel running free shall keep clear of all others plus all the other sailing vessel rules. Probably all the instructors and lecturers at our Marine facilities would have to be replaced apart from all the drop outs in the students as they changed their career vocations. The number of collisions among power driven vessels would be nothing if threw sailing vessels into the equation. Would put the keystone cops in second place in the comedy of errors. Cheers JS.

[Colin Wood]

I wonder what he would have thought of the old bunker c which we burnt in steam ships in the 50's. Had to be heated to make it pumpable. Nearest thing today would be bitumen. What they call heavy oil now is lighter than some of the diesel I have seen.

[robpage]

Wightlink’s new flagship Victoria of Wight is on track to be the Solent’s ‘greenest’ ferry when she joins the company’s fleet on the Portsmouth-Fishbourne route in 2018.

Head of Safety, Barry Smith, has briefed an audience of shipping professionals at the Passenger Ship Sustainability Conference in Southampton on the latest technology being installed on board the vessel at the Cemre shipyard in Yalova, Turkey.

“This was a good opportunity to highlight our journey to become a more environmentally friendly operator, delegates were interested to hear about the benefits our new ship will bring in terms of improving efficiency while reducing noise and emissions,” he says.

So it looks like they're are using a low sulphur marine gas oil . They have used Voith - Schneider propellers for years which do those who haven't seen them or odd looking things that hang downwards . It looks to me like when the engines are running and propelling the generator attached the engine is producing very little but when the engines are idling instead of the power propelling the ship it is powering up the generators which is charging up batteries and the batteries are used around the ship to save generated power . I think this is a bit of a first for Wartsila

[happy daze john in oz]

An interesting article in one of our papers here last year.
It concluded that the majority, about 95% of the global scientist who signed up to the climate change policy ae employed by government agencies.

I fail to see how diesel, now Sulphur free, and some of the cleanest fuel can be doing so much harm.

Most modern ships now are all electric, the power being generated from a diesel generator.
I have seen the fuel being loaded and it looks no different to normal diesel.

Smoke from such power sources is often just unburned fuel brought about by dirty air filters or inductors that require cleaning.

[Ivan Cloherty]

#10. Just imagine Ivan everyone having to go back to basics andlearn the Rule of the Road. E.g. a vessel close hauled on the port tack shall keep clear of the one close hauled on the starboard tack, and a vessel running free shall keep clear of all others plus all the other sailing vessel rules. Probably all the instructors and lecturers at our Marine facilities would have to be replaced apart from all the drop outs in the students as they changed their career vocations. The number of collisions among power driven vessels would be nothing if threw sailing vessels into the equation. Would put the keystone cops in second place in the comedy of errors. Cheers JS.

When I first saw the mention of sailing ships my mind also went back to the Rules of the Road and those bloody situations of closed hauled, running free etc and I'm glad I'm ashore! All the examinations would be carried out by theorists probably never having set foot on any vessel.

[j.sabourn]

#16..only ever sailed on one steamer that burned bunker C Colin. She was the original Irish Elm, renamed a few times and under various FOC, including North Korea I believe, but could be wrong. Was under the Gibraltar flag when I was there in 1970. When had a following wind had to literally go off course 15/20 degrees to see what was ahead. Walked off after 11 months had had enough and could see disaster on the horizon, was an absolute shambles as a ship, and yet someone on here a few years ago spoke very highly of her. I’m afraid I had no rose tinted glasses when it came to that vessel. To complete the 12 months contract was so near and yet so far. Would have been taken off in a strait jacket. JWS