He'd tell him, he'd get his orders from the office, cos the Deputy Harbourmaster he would go down all the sound  he  sound in river and see what wanted taken out, then he'd say to my father I'll dredge at so and so belo below docksill and docksill what they used to do they used to, my father what he'd do he'd put stakes on the mud, a short stake and a long stake on account of the tide and he'd, he'd make an imaginary  on that stake, then he'd go ashore at Wolverston, phone up  what have you got on your docksill, the fella might say it's ten feet, well he'd say right we'll make that twenty feet, so that's er, that's what he used to work on to dredge the river.