Just did a little research out of curiosity, it looks like electric or electric/LNG harbor tugs are being produced and deployed to shipyards over the last few years - In 2019/2020 they have a bollard pull of between 5 and 45 tonnes with a battery of 2500kWh, and 2022/2023 there are some with a bollard pull of 60 to 80 tonnes and up to 6000kWh. Apparently they last all day, who knows how real world performance actually plays out since these ports are all obsessed with meeting the communistic sustainable development goals instituted by ESG. All these electric tugboats are habor only, havent seen a single open sea vessel which require much larger ranges, size and a pulling power of at least 70-120 tonnes at a bollard pull. They do make sense, in theory though, since the dead weight of battery banks has less effect than air or land travel.
My Honda gcv 160 lawnmower I got for $15 uses 1/2 quart of oil every 40 minutes. You are fully aware of the wind direction. Trying to get new rings and maybe do something about the piston slap. Is it worth it? Yeah maybe considering they are no more and I want to say that the money spent is a learning opportunity. My point is that the boat clears up and my mower can be seen from helicopters in the sky. I hate to be seen with it like that. People are so ready to rage over mundane things these days. What they don't realize is that I am right on top of it. Not too fun. Funny maybe. The boat is as great as it needs to be.
I've always wondered: Why are there so many smokestacks? I got the two main engines and a generator, but it looks like there are five exhaust pipes? Also do you know why they are shaped in such a way, as opposed to just being straight or not "bendy"? Thanks!
Bit late but the shape is to stop the ingress of rain and sea water. One stack will be a generator set, another will maybe be a hydraulic power unit or a water pump. One of the latest vessel I worked on building had 4 smoke stacks, 2 for the main engines, 1 for a high pressure water pump for underwater pressure cleaning, and another for the generator set. It's pretty standard really
They are bent inwards to allow manouvering under the Bow of larger Ships. A nice Side Effect is that it gets some Distance between the Exhausts and the Deck Crew of a larger Ship when alongside e.g. for connecting the Tug, thus not blowing Exhaust Gas directly into their Faces.
Living along the Columbia River and having jet skied near the tugs that push barges up and down river, they sure sounds like a locomotive when the power up. I don't know what engines are used honestly!
Columbia river has a bunch of EMD. There are also a lot of Caterpillars, one that I know is a Cummins. Its a smattering. What I do know is, most are not large enough to actively compete with a locomotive. Portland doesnt have the need for stuff that big.
I was serving as an Artillery Sergeant on a Fast Patrol Boat of the German Navy. A class 143 "Albatros" boat, hull P6115/FGS S65 Sperber. en.wikipedia.org/wiki/Albatros-class_fast_attack_craft Those were 58 mtrs long and up to 44 knots fast under military power settings.Why? Because of 4(!) magnificent 16 cylinder double turbo engines with 160 liters or 9763,8 cubic inch of displacement from MTM, putting out 4500HP each. So we had 18.000 horses in a 58mtr boat made from aluminium and teak, because anti-magnetic steel as mine protection was not available or too expensive in the beginning of the 70´s in Germany. 48 cubic meter of diesel were onboard and we ran through 8 cubic meters every hour while doing 44 knots:) Those were the times. They called the fire department in France when we were starting one by one, because we were "rolling coal" like nothing the french had ever seen, while fleeing:)
A few reasons.... 1) to direct the flow of exhaust as much away from bridge as possible. 2) to minimize admittance of rainwater when engines not running. 3) to maintain as low a profile as possible in the event that it must be in close quarters with the overhang at bow of a ship.
no, they shouldnt, black smoke is overload, or to mutch feul entering the cilinder, before the turbo's can build up pressure., its a lack off air, or to mutch feul due to giving it full load at oce, instead of slowly to help the turbo's give thetime to spoul up), under full load it should not smoke black, thats overload... (in cold start conditions the regulator pulls the feul rack to ful power, in the first revolutions starting it will pull it back, reducing the amount off feul injected in the cilinders., thats why it smokes that black at cold start...)
its the engine's rpm regulator (governor) ,when you start them up, there on ful throttle., if it starts the governor puls the feul rack back to the desired amount dictated by the throttles.. in most modern diesels its controlled by a computer.but it wil work almost the same.
Nope. Unburnt diesel fuel smoke is white. Black = ovefuelling, where the there is too much fuel for the air aka "too rich". It is 'burning' fine, just not in the correct mixture. It's a problem common to turbo diesels and can occur when a high throttle demand results in smoke before the turbo spools. Mr Bugsier5 was quite correct.
Because the EPA does not require tight emissions regulations "yet" and the IMO Tier 3 regulations are not agreed upon by all parties involved and have not been enforceable yet. The EPA's plan has always been to start with the largest quantity of engines being sold with the smallest displacement (think On Highway emissions from small pickups and semi trucks) and enforce regulations on those first, eventually working their way up to the larger displacement engines over the span of many years. Marine applications are especially challenging to upfit with aftertreatment emissions control devices because they have to worry more about fires at sea due to the 450 C exhaust temp, and also what do they do when the device plugs up with soot. They are also hard to enforce because ships that make international travel can turn off or "re-route" their exhaust aftertreatment device once they are some distance away from the shoreline (roughly 100 miles) of the regulated zone. Once you are in international waters, there is no regulation until you reach the next shoreline that has regulation. I can assure you there are several companies actively designing large marine engines (3000+ hp) that are far more fuel efficient and far cleaner burning than any of these old rigs you see out there now. But it's a tough market to due high cost and low volumes of units sold.
Diesels smoke when they are not warmed up or just starting(runs it really rich). Also they smoke when facing a lot of resistance like when a truck goes up a hill without downshifting or in this case prop having to push water while pulling large boats.
Lol starts better than my damn car! But geeeeeezus Christ. 5000hp diesels usually don't put out much horsepower but gobs of torque! So what are the torque ratings! Or is it transferred to electricity and or hydraulic?
Um, 5000 HP is 5000 HP. Horsepower is how much work an engine can do, i.e. move things. Torque is just an instantaneous measurement of the force it applies to the crankshaft. Torque is huge on low-RPM diesels because a large force is required to do work at low RPMs. If they revved higher, the torque would be less for a given horsepower. Point being this: power is power. Power is the ability to move things, accomplish work. Torque is just the force used to do it.
@@mrobinson4210 I would word it this way; Horsepower is how fast you apply torque. Torque is what gets the work done, horsepower is how fast you get it done.
This is unlikely to be 5500hp, more likely 1500hp. A tug's thrust is limited by its buoyancy. When you're at maximum bollardpull with the towing line at an angle, it causes the tug to lay over. A tug like this has very low freeboard, which limits the maximum allowable thrust. I'm going to guess around 60 tons bollardpull, so around 1500hp. Cheerio!
You probably wouldn't want to - not much performance gain. Lots of power, but also very heavy. The engine alone probably has a worse power-to-weight than your entire car. So it won't haul ass, but you can bet it would haul (or more drag) shit, anything you could possibly hook to it.
It is pity that the cameraman only shot from the out side of the ship..... much more interesting if they shot the SOP of starting the engines from the inside of engine room
two 5000 hp engines ,,, or two 2500 hp engines???the black smoke is normal,,,,when try to start some unburnt fuel has in ccylinders chamber,and when fires up,,, the air /fuel weight ratio is less than 17 , at ralenti,,,the ratio is about 100,,,at full load is 17.
Ich liebe Motoren u Schiffe ( außer Passagier Schiffe ) aber ,,diese" Abgase sind jedenfalls nicht gut in der Nähe eines Luft Kurort für Lungenkranke ☝️🤭