A blog about boats, fishing, water sports and having fun on the ocean
What is the rubbing strake?
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A Wale, usually of timber fitted along the outside or bottom of a hull to protect it from wear. A rubbing strake should be fitted in a way that allows easy replacement when it is sufficiently battered.
A rub rail hides the joint between a boat’s deck and hull, thus accentuating the sheerline. On a practical note, it serves as a buffer between the boat and pilings, seawalls and other objects. Hence the name, rub rail.
How do you attach a rubbing strake?
Attach one end of the rubbing strake by drilling a hole through the bending strake and the flange.Put a nail or similar through the hole as a temporary attachment. If possible keep as much as possible of the rubbing strake heated under this operation.
Where is the strake on a boat?
On a vessel’s hull, a strake is a longitudinal course of planking or plating which runs from the boat’s stempost (at the bows) to the sternpost or transom (at the rear). The garboard strakes are the two immediately adjacent to the keel on each side.
There is a way though to enhance the speed profile of a pontoon boat, without adding extra horsepower, or ditching weight from the boat. That’s by adding lifting strakes. This increases the rated speed by about 15-25%.
Are lifting strakes necessary?
In short, pontoon lifting strakes provide the ability for your boat to increase speed by lifting the boat to the surface of the water. Lifting strakes will also support your boats performance in rough waters. But, I personally would only have them if they are already a pre-installed feature on the pontoon.
What is a bilge strake?
Meaning of “Bilge strake”
Line of shell plating at the bilge between bottom and side plating.
What is keel Strake?
Keel Strake
But keel plate is also made up of smaller sections of the steel plates. These strake of plates that form the keel of the ship is called Keel Strake. The plates in the keel strake are number from aft to forward starting from the aft one which has the number “1”.
What are planing strakes?
Small linear protrusions that run longitudinally on both sides of the Keel to give a Planing Hull lift and lateral stability.
What are strakes and chines?
In very simple terms the chine is where the side of the boat meets the bottom.A strake is on the bottom of the boat, it runs length wise and helps the boat track straighter. Spray rails come in many forms, but are attached somewhere to the side of a boat to knock down spray generated by running through choppy waters.
Chines refer to the sharp changes in angles in its cross section. These angular chines appear along the outline of your boat’s hull and in the area where the hull intersects the underside of the boat.
Why do boats chine walk?
The boat is now “inherently unstable” – this means that if left alone, the “imbalance” of the hull is more likely to get worse on its own, not better (the worse it gets, the worse it gets). So, the hull will now start to rock from port chine to starboard chine – back and forth. This is called “chine walk”.
What does deadrise mean for a boat?
A boat’s deadrise is the amount of angle that forms between the boat bottom and a horizontal plane on either side of center keel. The deadrise angle is the least (meaning flattest) at the transom and gradually increases (more vee) as the bottom goes forward and then increases at a greater rate at the bow.
How do I stop my boat from chine walking?
MINIMISE CHINE WALKING:
Check and adjust the boat’s steering.
Change rubber engine mounts for solid mounts to reduce play between the steering and the motors.
The flatter the running surface under the hull, the better the boat handles, particularly in speed boats and highperformance boats.
Do Trim Tabs help chine walking?
Trim tabs are super-easy to use and after just a few times using will become second nature. The concept is simple but the results are impressive! Benefits include: planing faster at slower speeds, reducing bow rise, correcting listing, correcting chine walking, correcting porpoising, and more. Enjoy the ride!
A Chine that angles downward from the Hull designed to direct spray out and away from the vessel.
What is porpoising in a boat?
Porpoising is a sustained, repetitive motion that causes a boat’s bow to bounce up and down out of the water, even in calm waters. While porpoising can be merely uncomfortable for passengers, it can also cause loss of control, which may result in injury or damage to the structure of the boat.
How far below the transom should the prop be?
The outboard anti-ventilation plate should sit about 1 inch below the bottom of the boat (hull) at the transom.
How do you fix porpoising?
How do you cure porpoising?
It’s relatively easy to cure by increasing the rear ride height so that it never reaches the critical stall point even at high speed, but not without losing a lot of performance. Yet, in Barcelona, McLaren showed that it was possible to retain competitive downforce without inducing much porpoising.