Del. Code tit. 25 § 302
A person having a legal or equitable estate or right in fee tail in possession, remainder or reversion, in any lands, tenements or hereditaments may alien the lands, tenements or hereditaments, in fee simple, or for other less estate, by deed, in the same manner and as effectually as if such estate or right were in fee simple. The deed of alienation in fee simple of any person, of any lands, tenements or hereditaments shall have the same effect and operation for barring all estate tail and other interests in the lands, tenements or hereditaments, as such persons being a party cognizor to a fine in due manner levied, or party vouchee to a common recovery with a double voucher in due manner suffered, of the lands, tenements or hereditaments. No deed shall avail within either of these provisions, unless it is duly acknowledged or proved according to law, or unless it would be a valid and lawful deed sufficient to pass the premises, if the maker were seized of the premises in fee simple.
25 Del. C. § 302