Da quanto ne sappia, la Loss of License Insurance serve per i marinai e gli altri che partecipano alle varie attivita' di acquacoltura (fra altri professionisti che hanno bisogno del brevetto).

License Insurance is a type of Malpractice Policy. There are many on the market. Doctors, lawyers, accountants and other licensed professionals are the best known groups that use this form of insurance. Reduced to its bare essentials, a Marine License insurance policy provides an attorney to defend your license should the Coast Guard, State Pilotage Commission or other issuing authority question your competence to hold the license or tankerman’s endorsement. In addition, the policy also indemnifies you against loss of income for up to a year – if there is a revocation or suspension. Additional optional coverages are also available. These include Civil Liability and Civil Penalty coverages. Example – you are named as a defendant in a civil lawsuit seeking monetary compensation for property damage or bodily injury. Or, you are named as a respondent in a Civil Penalty action in which a government agency files a penalty action against you on the basis of a violation of a navigational law or environmental regulation of the Federal government, a coastal state, city or municipality.

http://www.marinelicenseinsurance.c­om/faq/faq-license-insurance/#whati­s

--------------------------------------------------
Note added at 41 mins (2013-03-26 15:45:31 GMT)
--------------------------------------------------

Other sources:

http://www.uiltrasporti.it/allegati/2976_Polizza infortunio,...

http://www.ipaorg.it/index.php?option=com_content&view=artic...

http://www.pprune.org/italian-forum/255068-assicurazione-per... (per piloti, ma ti offre un po' di informazioni utili)