Brownell boat Stands & jack sail hull supports marina dry dock stackable USA

Marina boat stands power jack stands & screw trailer boat Stands stackable
for sale Made in the USA

Why pay for used when you can purchase new jack stands wholesale?

How to use screw boat stands

Type of boat stands to use

The correct type of Marine boat stands (sail jack stands vs. motor vessel) is determined by the angle between the hull and the stand center pipe. The threaded rod from the top that enters the stand center pipe should do so at approximately a 90° angle to the vessel hull. For example, a motor vessel with a deep v bow would use a pair of sailboat stands at the bow, with motor stands at the stern.

Size: To determine the proper boat jack stands to use, you first must realize the jack stands are to stabilize your vessel and the keel blocking supports the vessel weight. A simple method would be to take the draft of the vessel (in inches), add the height of the blocking pile, and subtract about six inches. Base your decision on keeping a minimum amount of thread exposed on the top for dry docking.

 Number vessel hull supports Required:

A minimum of four jack stands should be used with powerboats and a minimum of five jack stands should be used with sailboats. One exception: a full keel sailboat may not require a bow stand. Use a pair of jack stands, one placed port and one placed starboard, for approximately each 8 feet of the vessel's length. If you are going to be stored in an extremely windy area or leaving a sailboat mast stepped, extra vessel stand should be used in addSaliboat & boat stands to our minimum requirements.

Liability: Because the performance and safety of vessel jacks stands is dependent on the way they are used, the manufacturer assumes no liability beyond the purchase price of the vessel stands.


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How to Use jack stands For Dry Docking your boat using our stands


Port/Starboard Sides: When ready to use Jack Stands you must choose an area to store the vessel that offers hard, stable ground to prevent the sinking of keel blocking and stand. Jack Stands should be placed outboard on the hull for stability. The stand tops should have minimum thread exposed with the threaded rod placed as close to per perpendicular as possible to the hull. To guarantee the threaded rod being close to perpendicular, the boat stand base rear legs are placed so they are parallel with the waterline. The boat stand is placed square to the hull (not twisted fore or aft) with the boat stand top on the flat of the hull for stability.

Bow and/or Stern: Most sailboats require a bow jack stand with a V top to prevent the bow from dropping forward. The exception to the rule might be a full keel sailboat that is not "bow heavy". Any excessive overhang in the stern requires two additional stands port and starboard on the after portion of the boat. boat stands  hull stands

Safety Chains: When using safety chain for sailboat stand, the port (or starboard whichever comes first) stand is placed in position with the jack stand top snug against the hull. A 3/16" chain is placed in the safety chain notch of this boat stand and the chain is passed athwart-ship either before, after or under the keel to the starboard, or opposite stand chain notch. The starboard boat stand is placed in its approximate position but not snugged tight against the hull at-first; the chain is pulled tight and placed in the starboard Boat stand chain notch. Once snug in the chain notch, pull the starboard boat jack stand outboard until the chain is snug. Tighten the boat stand top, making sure the rear legs of both boat stand are parallel to the hull. Use safety chains and repeat this procedure for all side sailboat stand to prevent the boat stands from sliding up a boat's hull.

Keel Blocking: We always recommend a minimum of 2 blocking piles placed on hard, stable ground to carry the boat's weight. Each blocking pile consists of 3 blocks, i.e. two base blocks facing fore and aft running parallel to each other, and one block placed across the two base blocks for the keel to rest on. This method has proven to reduce sinking of the blocks. For each blocking pile we suggest 2 of our B-8 (8"x8"x22") pine blocks for the base blocks and 1 of our B-6 (6"x6"x22") pine blocks placed across the base blocks. Higher or lower blocking piles can be used depending on how the boat drains, however, the lower to the ground, the better. More blocking piles should be added as necessary depending on the condition and length of the keel


Vessel jacks and blocks should be checked on a regular basis while your vessel is being stored. Make sure the jack stands are snug against the hull and the keel blocks are supporting the keel and not sinking into the ground. Also check the blocks for rotting or splitting. Do not tie tarps to the Stands. During windy conditions, check more frequently for proper vessel shoring and security of our stand while they are stabilizing your vessel. When not in use, we recommend lubricating the threaded rod section of our Tops (WD40 or axle grease may be used) and storing in a cool dry place. Our nestable and stackable vessel stand bases should be kept painted with rust preventative paint. Moisture and salt creep up from the ground and corrosion may start from the boat stand base bottom up. Replace any badly rusted boat stand or rotted blocks, safety is jeopardized.

We also offer trailer jack stands.

Important: Our shafts are made of solid Steel, NOT hollow steel shafts!

Our hull supports are made here in the USA

Wholesale Orders
We Offer Wholesale Prices

To find out pricing and more:
Phone: 855-298-6996
Email: Click here
Call us at 855-298-6996
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