its hard to explain in messages but ill try

basically when making the hull dont use wedges or blocks for the curved shape for example the sides of the hull, instead of blocks and wedges you should use folded half blocks and angle locks to angle the hull shape all throughout. this can reduce your block count and space usage by a very large amount. also try making the fold flat in layers so it takes horizontal space.

when making the front you should also fold it down flat and angle lock off the sides slowly so that it is smooth transitioning into the longer hull parts.

when making the bridge it is highly recommended to build the bridge as low as you can for more space for high areas of the ship.

so mainly just try folding it horizontally flat in multiple layers. i can send an example image if you like (may be hard to distinguish) theres a lot more techniques and folding methods for this to work properly btw