The calculator below uses your vessel length, chain standard, size, length, and anchor weight to determine a total system load and recommend two suitable windlass options. Each option includes the required working load and compatible gypsy for your specific chain and anchor setup.

• The first option is the closest match to your calculated working load.

• The second option offers additional power for heavy vessels — ideal if you need the extra performance or plan to upgrade your chain length in the future.

If you expect to add more chain or upgrade your anchor in the future, enter those values now to ensure you select a windlass with sufficient power for your desired setup.

Please note: Gypsies are specific to chain standards and dimensions. While Muir offers a full range of gypsies, changing your chain type may also require a new one. Even if two chains share the same nominal size, variations in standard or pitch can affect compatibility — always confirm before purchasing to avoid unnecessary replacements or additional costs.