If you have ever been lucky enough to visit coastal areas in extremely cold climates, you may have laid your eyes on an icebreaker boat. They are quite difficult to miss: an icebreaker can easily be hundreds of feet in length and height, dwarfing most commercial vessels. In the US, you can find icebreakers in Alaska and at the very top of the Eastern seaboard.
These massive vessels are designed to create navigable routes through frozen waters by plowing through the ice to create safe waterways. A new ice breaker can cost as much as $1 billion for the Coastguard to acquire, owing to their immense size and capabilities. But how does an icebreaker boat work? Read on to find out.
1. Hull Design
When it comes to icebreaker capabilities, the strengthened hull is arguably the most important feature. All icebreakers typically have a double hull featuring multiple watertight layers. This is so it can break through meters-thick ice without sustaining damage.
The hull is designed to be ice-resistant and will nearly always be made out of fortified steel to make it impenetrable. The high-strength steel in most icebreaker hulls usually has a yield strength of as much as 500MPa.
The ice-clearing shape of an icebreaker boat is essential for cutting through thick ice and allow safe navigation for other vessels. While normal vessels have a pointed hull, icebreakers feature a sloping or rounded stem, as well as a rounded bow.
This allows the icebreaker to smash through the ice and then Ride safely over it without losing balance or taking on structural damage. It is crucial to get the shape of the icebreaker just right.
As you might have guessed, it takes a whole lot of power to get an icebreaker up and running and to ensure that it can easily smash through miles of thick ice. Older icebreakers tend to be powered via oil or coal and will have a significantly higher number of furnaces to maximize power.
The energy consumption of an icebreaker is higher than virtually any other type of vessel in the world. To meet the extremely high energy needs, many icebreakers are now powered by nuclear, especially in icy countries such as Russia or Finland, where icebreakers are needed without fail every winter.
The rounded hull is key to the function of an icebreaker. The rounded hull allows the vessel to glide on top of the thick sheet of ice, after which the immense weight of the vessel can come down on top of it, smashing it completely.
The rounded edges will then push the ice out of the way, reducing friction and ensuring that the ship does not take on damage. The hull may also be painted with polymer paints to reduce ice friction.
5. Icebreaker Boat Alternatives
Icebreaker boats are only necessary when governments are attempting to create safe international waterways. If you are a property owner looking to clear ice away from your dock, you will need something much smaller and cheaper.
You can use Powerhouse ice eaters to keep your dock area free of ice throughout the winter months. This requires no effort on your part – simply install the ice eater and let it do its job.
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