You know, those laws sound a lot like the Federal laws regarding piracy (http://www.access.gpo.gov/uscode/title18/parti_chapter81_.html
Sec. 1651. Piracy under law of nations
Whoever, on the high seas, commits the crime of piracy as defined by the law of nations, and is afterwards brought into or found in the
United States, shall be imprisoned for life.
Sec. 1652. Citizens as pirates
Whoever, being a citizen of the United States, commits any murder or robbery, or any act of hostility against the United States, or against any citizen thereof, on the high seas, under color of any commission from any foreign prince, or state, or on pretense of authority from any person, is a pirate, and shall be imprisoned for life.
. . .
Sec. 1655. Assault on commander as piracy
Whoever, being a seaman, lays violent hands upon his commander, to hinder and prevent his fighting in defense of his vessel or the goods intrusted to him, is a pirate, and shall be imprisoned for life.
. . .
Sec. 1658. Plunder of distressed vessel
(a) Whoever plunders, steals, or destroys any money, goods,
merchandise, or other effects from or belonging to any vessel in
distress, or wrecked, lost, stranded, or cast away, upon the sea, or
upon any reef, shoal, bank, or rocks of the sea, or in any other place
within the admiralty and maritime jurisdiction of the United States,
shall be fined under this title or imprisoned not more than ten years,
(b) Whoever willfully obstructs the escape of any person endeavoring to save his life from such vessel, or the wreck thereof; or
Whoever holds out or shows any false light, or extinguishes any true light, with intent to bring any vessel sailing upon the sea into danger or distress or shipwreck--
Shall be imprisoned not less than ten years and may be imprisoned for life.
. . .
Sec. 1659. Attack to plunder vessel
Whoever, upon the high seas or other waters within the admiralty and maritime jurisdiction of the United States, by surprise or open force, maliciously attacks or sets upon any vessel belonging to another, with an intent unlawfully to plunder the same, or to despoil any owner thereof of any moneys, goods, or merchandise laden on board thereof, shall be fined under this title or imprisoned not more than ten years, or both.
. . .
Sec. 1661. Robbery ashore
Whoever, being engaged in any piratical cruise or enterprise, or
being of the crew of any piratical vessel, lands from such vessel and commits robbery on shore, is a pirate, and shall be imprisoned for life.