In maritime and nautical contexts, wells can refer to several different features, depending on their specific use:

Ballast Wells: Compartments within the hull of a ship designed to hold water as ballast, helping to stabilize and balance the ship.
Fish Wells: Storage areas on fishing boats where caught fish are stored, often designed to keep the catch fresh.
Dry Wells: Used on some vessels to contain equipment or machinery, keeping them separate from areas that might be exposed to water.
In general contexts, wells are deep holes excavated in the ground to access water, oil, or gas.

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