Here is the law that he is referring to:
Sec. 8. And be it [further] enacted,Every ship or vessel outward bound, to be furnished with a medicine chest: That every ship or vessel belonging to a citizen or citizens of the United States, of the burthen of one hundred and fifty tons or upwards, navigated by ten or more persons in the whole, and bound on a voyage without the limits of the United States, shall be provided with a chest of medicines, put up by some apothecary of known reputation, and accompanied by directions for administering the same; and the said medicines shall be examined by the same or some other apothecary, once at least in every year, and supplied with fresh medicines in the place of such as shall have been used or spoiled; and in default of having such medicine chest so provided, and kept fit for use,Penalty on the master for default. the master or commander of such ship or vessel shall provide and pay for all such advice, medicine, or attendance of physicians, as any of the crew shall stand in need of in case of sickness, at every port or place where the ship or vessel may touch or trade at during the voyage, without any deduction from the wages of such sick seaman or mariner.
Which essentially says the ship has to have a first aid kit. That's a bit different than saying that everyone has to have their own insurance.
Sec. 8. And be it [further] enacted,Every ship or vessel outward bound, to be furnished with a medicine chest: That every ship or vessel belonging to a citizen or citizens of the United States, of the burthen of one hundred and fifty tons or upwards, navigated by ten or more persons in the whole, and bound on a voyage without the limits of the United States, shall be provided with a chest of medicines, put up by some apothecary of known reputation, and accompanied by directions for administering the same; and the said medicines shall be examined by the same or some other apothecary, once at least in every year, and supplied with fresh medicines in the place of such as shall have been used or spoiled; and in default of having such medicine chest so provided, and kept fit for use,Penalty on the master for default. the master or commander of such ship or vessel shall provide and pay for all such advice, medicine, or attendance of physicians, as any of the crew shall stand in need of in case of sickness, at every port or place where the ship or vessel may touch or trade at during the voyage, without any deduction from the wages of such sick seaman or mariner.
Which essentially says the ship has to have a first aid kit. That's a bit different than saying that everyone must buy their own insurance.