Hi Searush is perfectly correct. on our 58 foot narrowboat we carry a 32lb Danforth and about 8 metres of 10mm chain with 25M of 3/4 nylon. Hard eye for the shackle that joins chain to rope and soft eye for hooking over the front T stud. Narrowboats do not anchor as such but carry the above ground tackle almost universally to self arrest on rivers if they have engine failue and need to stop before a weir or other hazard. Hope this helps.