Boats that can make 15 to 20 knots can ride across a bar into a harbor or river mouth on the back of the ground swell.
Isikhitshane esinokwenza ishumi elinesihlanu ukuya kumashumi amabini esantya zinganqumla isithinteli ukuya elunxwemeni okanye emlonyeni womlambo emva komhlaba apho amaza ahamba kancinci.