Pros and Cons of Thrusters

DHMatson

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I have been reading the threads dealing with thrusters and I am surprised at how polarizing they are. If you used them some would say you are not capable of handling your boat, ands see their use as embarrassing, while others see them as a useful tool making the ownership of a boat more enjoyable and safer. I definitely fall inter the latter category.
I've been boating my entire life and personally think the Bow and Stern thrusters are a Godsend. I was introduced to boating as a young boy by my father who had a 1952 27 ft Owens Flagship with a 6 cyl. single screw Grey Marine. MY dad taught me how to handle the boat at 8 yrs. old on Long Island Sound, and while not a big boat, she was the large enough to raise the draw bridge in the Norwalk River. Since then, I have had runabouts, pontoons, and cruisers. While the small boats are easy to handle as long as you are responsible and understand the conditions you are running in. They do not present any big challenges, and with a little practice even a novice boater can gain confidence and skill in a relatively short time frame.
When we bought the 30 ft Chris Craft Express with twin straight inboards the same held true. She had a lower profile and was no trouble operating in 90% of the conditions we ran in. With twins it was relatively easy to maneuver and dock. (I took merciless ribbing if I had to make more than a single attempt backing her into the slip...) The wind was always present but with one other person she was very manageable even in the tight space our mooring provided.
In the Upstate NY finger lakes region, the wind is always a concern. Its windy every day, and without enough help docking our Silverton 35 MY is challenging. The biggest concern is being blown into the boat that shares the double slip at the marina. The Silverton acts like a huge sail, and when the wind is from any direction, especially from the south or southwest it can be nerve wracking to say the least. To leave the dock in moderate winds without 2 other people to help mooring it when we return is just plain stupid, so we did not. The boat has a bow thruster, and it helps immensely, so much in fact that we just added the stern thruster so we have the confidence and peace of mind knowing we can return safely with just my better half and myself on board.
Also, at 62 years old I like the control the thrusters provide, and my ego is not harmed because I use the technology available. I can handle a boat as well as most, but sometimes the conditions are difficult, and we have to try 2 or 3 times to get her in the slip safely. In my opinion avoiding personal injury or damage to our boat or our neighbors boat else's is more important than anything else.

Sorry for the long rant.

Don
 
They're great, and there have been many many times when I'd love to have had one, but what bugs the purist is when we see them being used when rudder/engine would have worked perfectly well. Someone came to pick me up from a pontoon aligned with a strong head current last year, no wind, and got it all completely wrong, twice, because he only had two hands and couldn't work the wheel, throttle and thruster at the same time.
 
They're great, and there have been many many times when I'd love to have had one, but what bugs the purist is when we see them being used when rudder/engine would have worked perfectly well. Someone came to pick me up from a pontoon aligned with a strong head current last year, no wind, and got it all completely wrong, twice, because he only had two hands and couldn't work the wheel, throttle and thruster at the same time.
But why on earth would it bug the ‘purist’ (rhetorical).
 
But why on earth would it bug the ‘purist’ (rhetorical).
Frustration that they had all the gear and hadn't learned to use it. No different to watching capable sailing boats motoring upwind on a lovely day or a fin keel owner guffawing that 'she just doesn't steer in reverse'.
 
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Frustration that they had all the gear and hadn't learned to use it. No different to watching capable sailing boats motoring upwind on a lovely day or a fin keel owner guffawing that 'she just doesn't steer in reverse'.
I get that, but why would I care that someone else chooses to use their boat differently from me - to me competence starts with making sure I have the right tools for the job - eschewing them because they are capable of being used incorrectly seems an odd approach.
 
I get that, but why would I care that someone else chooses to use their boat differently from me - to me competence starts with making sure I have the right tools for the job - eschewing them because they are capable of being used incorrectly seems an odd approach.
I'm far from eschewing them - as I said, I'd love to have had one many times - and if I were speccing a cruising boat (and had the budget) I'd certainly have one. Good analogy, but having the right tools is only any good once you've learned which to use when.
 
No objection to bow thrusters, just find it amusing hearing them grinding away on a boat happily turning under rudder. For those who have yet to learn, the tunnel mounted fans are only effective at very low or zero speed.

I learnt to use them on seismic survey ships while backing up and recovering a mile or so of cable over the stern ramp. My boats do not have one, but it could have been helpful on a few occasions, especially with a longish keel and berthing single handed. I have been paid to skipper a few yachts with a bow thruster. Most times I turn the battery on and put it on standby before unberthing or berthing, only to have the thing start beeping at me some time later having completed the maneuver without using it.

There is a danger in becoming over reliant on the thruster. I watched a couple on a boat berthing bows to the pier with stern between piles in Denmark. Strong cross wind and macho male standing at the wheel flicking the thruster control, again and again and again with zero response while the boat was blown diagonally across the next empty box. The lady on the foredeck showed far more intelligence and situational awareness as she readied a line to throw ashore.
 
No objection to bow thrusters, just find it amusing hearing them grinding away on a boat happily turning under rudder. For those who have yet to learn, the tunnel mounted fans are only effective at very low or zero speed.

I learnt to use them on seismic survey ships while backing up and recovering a mile or so of cable over the stern ramp. My boats do not have one, but it could have been helpful on a few occasions, especially with a longish keel and berthing single handed. I have been paid to skipper a few yachts with a bow thruster. Most times I turn the battery on and put it on standby before unberthing or berthing, only to have the thing start beeping at me some time later having completed the maneuver without using it.

There is a danger in becoming over reliant on the thruster. I watched a couple on a boat berthing bows to the pier with stern between piles in Denmark. Strong cross wind and macho male standing at the wheel flicking the thruster control, again and again and again with zero response while the boat was blown diagonally across the next empty box. The lady on the foredeck showed far more intelligence and situational awareness as she readied a line to throw ashore.

Different view: It's like a spare wheel in your car. Rather have it and not need it than the other way around.

First of all it should be a decision made on your requirements, not by fitting into any loosely defined purist role. I wouldn't give a hoot about other's views.

Over time boats have become bigger (wind having more area to push on), thrusters more common (affordable), more makes and models to suit all sorts of hull shapes etc. So if you have the need & budget I don't see why not?

The danger of becoming reliant seems irrelevant - see it as an assistant, helping when you need and decide to use it. It won't change laws of nature anyway which must be clear to all.

In most weather conditions I can park easily (also Danish manner) by using throttles on twin engines - not even touching the rudder. But in the event of unexpected movement for any reason I love to have the bow thruster. When single handed the thruster wireless remote is very handy for adjustments away from the helm.
 
One thing you will always find in this hobby/industry is that some people will never be happy unless we are sailing wooden boats with no engine and have nav light filled with oil ?.

The most important thing about having a thruster is knowing what to do when you don’t have one! An offshoot from that is knowing what to do when you don’t have one mid manoeuvre! At some point the fuse will trip or something will get sucked up into it when you least expect it or want it to!! If you don’t have an escape plan then that will be your downfall.

I would say that many modern boats with their flighty, light bows and certainly any modern boat pushing 45ft and up should be spec’d with a Bow thruster. As others have said, nobody is infallible and if it gets you out of the crap when you get caught by a gust in a very tight area or in close proximity to another vessel then what’s the issue. Also great for getting your bow through the wind when springs and whatever engine power you have just aren’t enough to get you away from being pinned on.
 
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The thesis is based on the premise that many (?) people eschew bow (and/or) stern thrusters.

I'm not sure this is valid.

Just because a vocal minority dislike a bow thruster does not mean their views are commonplace. A forum is not necessarily indicative of a representative section of the 'boating' population - and I would not get too upset of the views expressed (unless you are bored :) ).

Jonathan
 
I'm sure if we had a thruster I'd use it - and not feel at all embarrassed. But we don't, so we have to use techniques to compensate, like springing off in confined spaces and max use of propwash. IMO for us certainly not worth the hassle and cost of retrofitting one.
You took the words right out of my mouth.
 
They're great, and there have been many many times when I'd love to have had one, but what bugs the purist is when we see them being used when rudder/engine would have worked perfectly well. Someone came to pick me up from a pontoon aligned with a strong head current last year, no wind, and got it all completely wrong, twice, because he only had two hands and couldn't work the wheel, throttle and thruster at the same time.
Everytime I see someone driving by I get angry, I'm thinking why does that guy not have a horse. Probably the kind of person who would buy a plastic boat with roller reefing and heating. ?
 
Bow thrusters are very 20th Century and passe in some circles.

The really switched on owner has a Dockmate, Yacht Controller srl - Yachting Innovations (Official Manufacturer) system (and/or whatever the competitive system(s) are called) that allows you to dock your vessel using all your power systems integrated, main prop (forward, reverse, no of revs), bow and stern thrusters with a simple remote. You then do not need to worry about not having enough hands to operate the systems individually - the computer does it all for you. The concept has been around for years.

Jonathan
 
Bow thrusters are very 20th Century and passe in some circles.

The really switched on owner has a Dockmate, Yacht Controller srl - Yachting Innovations (Official Manufacturer) system (and/or whatever the competitive system(s) are called) that allows you to dock your vessel using all your power systems integrated, main prop (forward, reverse, no of revs), bow and stern thrusters with a simple remote. You then do not need to worry about not having enough hands to operate the systems individually - the computer does it all for you. The concept has been around for years.

Jonathan

But isn't that like the auto parking for cars when the driver can't parallel park themselves? God (other deities are available) bid what they'll do when the system crashes or they lose electrical power...

PW.
 
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