La. Stat. tit. 9 § 5526
Every mortgage of a ship subject to this Chapter entered into prior to the time Chapter 9 of the Louisiana Commercial Laws becomes effective shall be in writing and shall state the hull number of the mortgaged ship, and the location of the shipyard at which the mortgaged ship will be or is being constructed. The obligation secured by the mortgage shall be described, the exact sum secured thereby shall be stated or, if the same is to secure future advances, then the maximum amount thereof shall be stated, and there shall also be stated whether the sum is payable on demand or at which fixed or determinable future time. Every security agreement affecting a ship subject to this Chapter entered into after Chapter 9 of the Louisiana Commercial Laws becomes effective shall comply with the requirements otherwise applicable under Chapter 9.
La. R.S. § 9:5526