fancier
n
(esp in compounds 尤用以构成复合词) person with a special interest in and love for sth 对某事物有特殊兴趣和爱好的人
a `dog-fancier 玩赏狗的人
a `pigeon-fancier 喜爱养鸽子的人.
As a shipbuilder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface ship's power and limits its speed.