n. a useless computer; anything heavy and useless.
Why don't you replace that boat anchor with a new model?
boat anchor
noun a crippled or useless piece of computer equipment; by extension, a useless person US, 1991
boat anchor
Something related to computing and technology that is regarded as cumbersome and ineffectual, often obsolete. What are we going to do with a computer running Windows 95? Get that boat anchor out of here!
boat anchor
n. a useless computer; anything heavy and useless. Why don’t you replace that boat anchor with a new model?