small icebreak boat

I agree. It's a great idea.

I got that. Whether leaving the ice intact is a drawback depends on what Eric Zhu needs. That was not clear, which is why I referred to vessels that may be supposed to follow. If it is only necessary to get people and equipment to a work site, your suggestion should save the client a lot of money.

 

Perhaps a helicopter is your simplest, most expensive solution.

 

As so happens often with initial posts, the OP did not provide much information to enable the forum contributors to provide a focused response.
------------------------------------------------------------------------------------------------------------------------------------------------

It would be helpful to know which thickness of ice goes with the ocean and the lake as the type of build will vary with thickness.
----------------------------------------------------------------------

Offshore
You asked for a 3 meter width on the icebreakers. Such a narrow width means that IF THE PROJECT is large, that this icebreakers narrow path would be for a very narrow
supply ship to bring crew and building components .
So what will the goal for the icebreaker. ie break the ice for another narrow ship to carry men and equipment or for the icebreaker to carry equipment and and construction components to build or maintain the project?
What is the distance from the shore to the project?

What is the budget for this "small icebreaker" Other contibutors have mentioned that to break ice traditionally, that you need big weight and lots of horsepower. Both of these
parameters require big money.

I checked your reference to your "Shipbuilding company" and found the pictures shown to be of a very small shop. Do you have engineers or N/A's on staff?

 

Is the ice 30 cm thick at the wind farm? If it is, you can drive to it. Also, is the icebreaker also carrying personnel and supplies or opening a path to another boat? If it is opening a path, it should be significantly wider than the following vessel. Comparing the size of the project vessel to a fully loaded (80,000 lbs/36,300 Kg) It would have to be several times heavier. Consider the stress caused by the truck is concentrated on 18 wheels, and is not breaking the ice. The icebreaker has a larger surface area, so less overall stress. For an effective solution, you need to provide more information. To start with, examine the constraints. Do they need an icebreaker or a method of reaching the work area?

 

I worked for the USACE years ago, and we specified a 34 ft (10 M) crewboat capable of operation in ice up to 2 inches (5 cm) thick. As I recall the welded steel hull was 1/4 inch ( 6 mm) thick, quite heavy for it's size, with a 175 HP Diesel engine. 3/8 (9 mm) bow plating, with a collision bulkhead.

Just some info from my memory, back in the 1960s

 

mainly for the second boat to work on the water, use in solar power plant for service

 

how to add your whatSapp? my whatsapp is +8615165209832

 

we have 18 engineers , but all of them not have experience for icebreaker boat , normally is bigger ship .
welcome you have chance to visit our company , thank you .

 

put a couple of masts on the bow and rig a couple of big axes on hinges at the base of the masts. Run a cable or chain from axe-head over top of masts and down to winch on the deck. Might not be too fast but should be fairly easy and cheap to rig and operate, and if needed weigh of axe-head could be adjusted or take more than one whack.

I'm thinking operations would run from one whack which would start a fracture on thin ice enough to let the boat do most of the breaking itself, to where it would take several whacks on same spot on thick ice.

 

SD: Maybe hire some Vikings to wield the axes

 

The Canadians have had some legendary axemen haven't they?

 

its all about converting easy to obtain small but steady energy into orders of maga bigger force released in as short a time as possible. iirc Hi-Explosives don't have any more chemical energy, they just release it much faster. a burning candle will release 10x the energy as a stick of TNT, mostly because the candle gets most its chemical reaction from surrounding air's O2.

IMO ice breaking is good use of brief but power force, because you just need to crack the ice.

 

That is quite a lot of nonsense. TNT reacts with oxygen just as the wax in the candle does. The stick of TNT generates about 2.1 megaJoules. A candle generates about 410 KiloJoules; hardly 10 times more.

 

But there are bigger candles. A 100lb candle might just release more than 10x a stick of tnt. Though it will take months to do it.

 

We could also argue there can be 100 lb sticks of TNT. But let's not hijack an interesting thread with nonsense.