what are the sources of the fund?
The RNLI is principally funded by legacies and voluntary donations, with the remainder from merchandising and investment.
Royal National Lifeboat Institution
The RNLI is principally funded by legacies (65%) and voluntary donations (28%), with the remainder from merchandising and investment. 
what is the royal national lifeboat institution about? It is the largest charity that saves lives at sea around the coasts of the United Kingdom, the Republic of Ireland, the Channel Islands, and the Isle of Man, as well as on some inland waterways. when was it established? 1824 where are its lifeboat stations? Around the coasts of the UK, Ireland, the Isle of Man and the Channel Islands. does it have any women in its ranks? Yes, in the early days of the service, lifeboat launch and recovery was usually undertaken by women
wiki:1800411
Royal National Lifeboat Institution [SEP] Funding
The RNLI is principally funded by legacies (65%) and voluntary donations (28%), with the remainder from merchandising and investment. In 2014, the RNLI's income was £182 million, while its expenditure was £149.6 million. The Institution encourages corporate partnerships, which included in 2014 Waitrose, Yamaha and Fred. Olsen Cruise Lines. There are 1,100 RNLI fundraising branches throughout the regions served by the Institution, many far from the sea, which may support a particular station, or a project such as a new lifeboat. The Institution estimated their volunteer network at 31,500 in 2014. The largest regular contributor is The Communications and Public Service Lifeboat Fund (known simply as 'The Lifeboat Fund') established in 1886 for civil servants to support the RNLI collectively; the Fund has provided the Institution with 52 lifeboats as well as other support.