Flipping Boat Docks: A Step-By-Step Guide To Success

Boat docks can be permanent, stationary, or floating. Floating docks are supported by air-tight, buoyant pontoons that are anchored in place. They are safe, stable, and adaptable to varying water levels. However, they are best suited for calm areas and should not be exposed to strong winds or waves. Flipping a boat, on the other hand, refers to the process of rotating a boat upside down or right-side up for maintenance or repair. This can be achieved using cranes, slings, straps, and a supporting structure like a trailer or dolly.

Use a crane and sling

Using a crane and sling is a common method for lifting boats out of the water. This method is often used in the commercial shipping industry but can also be used for residential boats.

To use this method, you will need to follow these steps:

• Prepare the sling: The sling should be made of polyester, as this material has a low stretch value and maintains its working load limit when wet. The thickness of the sling will depend on the size of your boat. For small boats, such as kayaks or jet skis, a 2-ply sling is sufficient, while larger boats will require a 4-ply sling for heavy-duty use and greater durability. Make sure the sling is properly sized and fitted to your boat to avoid damage to the hull. You can also add spreader bars to the sling to provide additional support and prevent the straps from sliding on the hull.
• Position the crane and sling: Ensure that the crane is securely positioned on stable ground and that the sling is properly attached to the crane hook. Lower the sling into the water and position it under the boat, ensuring that the straps are wrapped evenly around the boat to distribute its weight.
• Lift the boat: Once the sling is in place, begin operating the crane to lift the boat slowly and steadily out of the water. Ensure that the crane is operated by a trained professional to avoid accidents.
• Secure the boat: After the boat is lifted out of the water, it can be secured in place using cradle lifts or bunks, similar to those found on a trailer. These cradles provide support and stability, distributing the weight of the boat evenly and preventing damage to the hull during long-term storage.

Using a crane and sling to flip a boat dock is a safe and effective method, but it is important to ensure that the crane is operated by a trained professional and that the sling is properly sized and fitted to the boat to avoid damage.

Employ a team of four people

Flipping a boat can be a tricky task, but with a team of four people, it can be a safe and efficient process. Here's a step-by-step guide on how to employ your team to get the job done:

Step 1: Prepare the Boat

First, ensure that the engine and any other detachable components have been removed from the boat. This will reduce the overall weight and make the flipping process easier.

Step 2: Position the Team

Position two team members on each side of the boat, standing at the front. They will be responsible for lifting and rotating the boat. It's important that they stand in a stable position and maintain a firm grip on the boat.

Step 3: Lift and Rotate

On a given signal, the team members at the front should lift the boat and slowly rotate it towards the side. They should work in unison to ensure a smooth and controlled movement. As the boat starts tilting, the other two team members can assist by guiding and supporting the rotation.

Step 4: Secure the Boat

Once the boat is almost halfway through the rotation, one team member from each side should quickly move to the opposite side and prepare to support the boat. They can use straps or slings to secure the boat and ensure it doesn't roll back.

Step 5: Complete the Flip

With the new positioning, the team can now work together to complete the flip, carefully guiding the boat until it is fully upside down. It's important to maintain control and avoid any abrupt movements that could cause the boat to shift unexpectedly.

Step 6: Stabilize and Check

Once the boat is upside down, take a moment to stabilize it and ensure it is securely resting on its hull. The team should check that the boat is balanced and won't accidentally roll back.

Step 7: Dolly and Positioning

Now, two team members can roll a dolly or similar equipment under the boat, allowing it to be set down securely. This ensures that the boat doesn't rest on its gunwales or nose, distributing the weight evenly.

Step 8: Final Adjustments

With the boat securely upside down, the team can make any necessary adjustments, such as adding additional support or preparing for any repairs or maintenance work that was the reason for the flip.

By following these steps and working as a coordinated team, the four-person crew can safely and effectively flip a boat. It's important to prioritize safety and stability throughout the process, ensuring that the boat is securely held and controlled during each stage of the flip.

Use two slings and an overhead bridge crane

Flipping a boat dock can be a complex and dangerous task, but using two slings and an overhead bridge crane can make it safer and more efficient. Here is a step-by-step guide on how to use these tools effectively:

Step 1: Prepare the Work Area

Before beginning the flip, ensure that the work area is clear of any obstacles and that there is enough space for the crane to manoeuvre. Inspect the crane to ensure all components are in good working condition, including the hoist, trolley, beams, and girders. Also, make sure that the crane is equipped with the necessary control systems to allow the operator full control over the load.

Step 2: Position the Crane

Position the overhead bridge crane above the boat dock, ensuring that the crane's runways are attached securely to the building's superstructure. The crane should have two overhead runways with a bridge connecting them, and the bridge should be configured with either a single or double girder design, depending on the weight of the boat dock.

Step 3: Attach the Slings

Attach two heavy-duty slings to the boat dock. These slings can be made of nylon or chain. Ensure that the slings are looped securely around the hull of the boat dock and that any necessary safety measures, such as shackles or eyebolts, are in place. The slings should be attached at points that can bear the weight of the dock during the flip.

Step 4: Lift and Flip the Boat Dock

Using the crane's hoist, begin to lift the boat dock slowly and steadily. The operator should have full control over the speed and movement of the crane to ensure a safe lift. Once the boat dock is lifted to a sufficient height, begin the flipping process by slowly tilting the dock until it reaches the desired position. Ensure that the slings remain secure and that the dock is stable throughout the flip.

Step 5: Lower and Secure the Boat Dock

Once the boat dock is in the desired position, carefully lower it back to the ground using the crane's hoist. Ensure that the dock is secure and will not roll or shift once it is lowered. Finally, remove the slings and inspect the boat dock for any damage or issues that may have occurred during the flip.

Using two slings and an overhead bridge crane can provide a safer and more controlled method for flipping a boat dock. However, it is important to follow proper safety protocols and ensure that all equipment is in good working condition to prevent accidents.

Use a gantry

Using a gantry is an effective way to flip a boat dock, especially if you're working alone or with a small team. Here's a step-by-step guide on how to use a gantry to flip a boat dock:

Step 1: Prepare the Gantry

Before you begin, ensure your gantry is sturdy and stable. If you're building your own, follow a reliable design, such as one with dimensional lumberyard stock assembled with Torx self-tapping screws and reinforced with bolts and washers for extra strength. You can also purchase pre-built gantries or rent a crane if you prefer. Ensure your gantry has handles for winding winches, which will be crucial for the lift.

Step 2: Position the Boat Dock

Place the boat dock beneath the gantry, ensuring it is centred and secure. If necessary, use additional supports or stands to stabilise the dock.

Step 3: Attach Lifting Straps

Secure lifting straps, such as truck winches or heavy-duty nylon trucking straps, to the gantry. Lead the straps under the boat dock and adjust their length so they are even on both sides. Ensure these straps are rated for the weight of your boat dock.

Step 4: Lift and Rotate the Dock

Begin the lift by operating the winches or hoists on the gantry. Lift the dock slightly to ensure it is secure and then continue lifting until the dock is a few feet off the ground. At this point, you can start the rotation process. Work slowly and carefully, ensuring the dock remains stable.

Step 5: Control the Roll

As the boat dock begins to roll, keep it under control by coordinating the winches or hoists. You may need to adjust the straps during this process to ensure a smooth roll. If you're working with a team, ensure everyone follows directions and works together to avoid injuries or damage to the dock.

Step 6: Reach the Tipping Point

Continue the lift and rotation until the dock reaches its tipping point. Once it passes this point, it should slide into an upright position. Ensure the dock is stable and secure before proceeding.

Step 7: Lower the Dock

After the dock is upright, you can lower it onto a cradle or blocks for further work. Ensure the dock is securely positioned before releasing the straps or removing any supports.

Using a gantry to flip a boat dock requires careful planning and execution, but it can be a safe and efficient method, especially for smaller teams or solo workers. Always prioritise safety and stability when working with heavy objects like boat docks.

Use a trailer

Using a trailer is a great way to flip your boat dock, especially if you want to store it for the winter or need to transport it. Here's a step-by-step guide on how to do it safely and effectively:

Step 1: Prepare the Trailer

Firstly, ensure your trailer is in good condition and suitable for the size and weight of your boat dock. If necessary, you can modify the trailer by removing the wheels and axle and using U-bolts to secure the trailer frame to a steel-wheeled cart made from angle iron. This modification can be helpful if you plan to launch your boat from a shoreline ramp.

Step 2: Position the Trailer

Position the trailer on a ramp or in the water, depending on your setup. If you're using a ramp, back the trailer down far enough to allow the boat dock to easily glide onto it. If you're launching directly into the water, ensure the trailer is securely attached to your vehicle and positioned so that the boat dock can be guided onto it.

Step 3: Prepare the Boat Dock

Before flipping, remove any heavy components like motors or engines. Ensure the boat dock is balanced and ready to be flipped. You may need to enlist the help of a few friends or colleagues to assist with the flip.

Step 4: Flip the Boat Dock

With the trailer in position, carefully flip the boat dock. For smaller boat docks, this may simply involve a few people lifting and turning the dock. For larger docks, you may need to use a winch or a hand/power winch system to assist with the flip. Ensure the boat dock is securely attached to the trailer to prevent it from slipping during the process.

Step 5: Secure the Boat Dock

Once the boat dock is flipped onto the trailer, secure it in place. You can use a variety of methods, such as attaching a 2"x4" board across the gunnels with a U-bolt or using ratchet straps to hold it in place. Ensure the boat dock is stable and won't tip or roll during transport or storage.

Step 6: Transport or Store the Boat Dock

Now that your boat dock is securely on the trailer, you can transport it to a new location or store it for the winter. If you're storing it, consider covering it with a tarp and support bows to protect it from the elements. Ensure the trailer is parked on level ground to prevent any accidental rolling or movement.

Remember always to exercise caution when flipping and transporting boat docks. Ensure you have the necessary permits and approvals, especially if you're modifying a trailer or constructing a ramp for launching. With careful planning and execution, you can safely flip and transport your boat dock using a trailer.

Frequently asked questions