Vessel doesn't store your master password (if that's what you used to import the account). So there's no way via Vessel to do recovery of that password.
If you have accounts imported into Vessel still - the keys exist (and are encrypted), so those might be recoverable, but the usefulness of those depend on what type of keys you imported into the wallet. This is shown on the account page with the checkmarks.
Vessel doesn't store your master password (if that's what you used to import the account). So there's no way via Vessel to do recovery of that password.
If you have accounts imported into Vessel still - the keys exist (and are encrypted), so those might be recoverable, but the usefulness of those depend on what type of keys you imported into the wallet. This is shown on the account page with the checkmarks.