Hello Solidworks Forum !

i have a little question, i am moddeling a large Tanker

you can see every frame as a block as you can see in the picture .

now instead of the blocks i need to make it a smooth line but i don't know how .

Does anyone have a good tutorial for this ?

or i tought maybe 1 front plane sketch and then another one with smaller sizes and then extrude one sketch to the other plane ?

Thanks for the help !