They lost their coach, a star player named Hopoate, and now the Manly Warringah Sea Eagles have seemingly lost their ability to spell.

In an embarrassing gaffe for the NRL premiers, logos on the latest run of jerseys misspelled the club's name labelling them as the "Manly Warringan" Sea Eagles.

According to Manly's commercial director, Greg Butterworth, the erroneous jerseys have been found in the club's own supporter store and distributed to at least 20 retail outlets already.

Speaking to News Limited, Butterworth acknowledged the error but insisted that it wasn't a major issue for the club.

"There have been a couple of complaints but most people have had a bit of a laugh and come in to replace it." Butterworth said.

"It's a nuisance ... but it won't cost us anything because (jersey manufacturer) ISC have agreed to replace it all straight away."

"It's just like a product recall."

The cost to ISC is expected to be upwards of $100,000 after they confirmed about 1000 items will need to be replaced.