The following chart can be used to find the right size of Spade anchor for your application. Unlike other manufacturers, Spade's sizing chart is accurate and includes a margin of safety. These sizings are accurate for use as a "storm anchor" on a typical monohull.
When sizing an anchor choose the model that corresponds the largest required for either the length or weight. For multihulls, choose 1 size larger than recommended in the table (think windage).
|Boat Length||Max Boat Weight||Anchor Model||Weight: Galvanized & Stainless||Weight: Aluminum|
|21 ft.||2200 lbs.||40||12 lbs.||6 lbs.|
|24 ft.||4850 lbs.||60||21 lbs.||10 lbs.|
|34 ft.||9920 lbs.||80||--||15 lbs.|
|41 ft.||14330 lbs.||80||33 lbs.||--|
|52 ft.||26450 lbs.||100||44 lbs.||26 lbs.|
|59 ft.||35270 lbs.||120||55 lbs.||--|
|65 ft.||44000 lbs.||140||66 lbs.||41 lbs.|
|75 ft.||50700 lbs.||160||77 lbs.||--|
|75 ft.||57300 lbs.||180||99 lbs.||--|
|82 ft.||66130 lbs.||200||121 lbs.||57 lbs.|
|98 ft.||88100 lbs.||240||165 lbs.||--|
|99 ft. & Over||330900 lbs.||380||243 lbs.||--|
*Custom sizes are available for larger applications