How to make a Long Bowl Shape?

Could someone tell me if this is possible.

I would like to build something with a long bowl shape.
It is easy to make for a bowl shape object less than 10 meters, basically a circle cut off half, but what do I do if I want to make a bowl shape which is longer than 10 meter? Something like 25 meters long?

Edit: I have included the shape of what I want to build in the attached image
Thanks

Two half rounds in the middle and a sphere on each end cut 1/4 down.

Size them accordingly.

I am not sure this is what I am looking for. I have attached the shape as an image to my original post. Any help would be really appreciated. Thanks again

Past the 10m point, the best you can do is make a pretty good mimic of the shape. I suppose there are some super-sized prims that exist for sale, but they're sorta not recommended, and also rather buggy such that you wouldn't be able to walk into the hollowed-out space inside them unless you put multiple hollowed pieces together.

I recommend creating some similar shape, which was probably what Markubis meant: Cut out a couple hollow spheres for the two ends, then use a couple hollowed cylinders to create the middle. I haven't tried it, but, it may be useful to play with your tapering options for the cylinders, or even to try using the similar but more advanced Tube prim instead.

I'm thinking "Canoe" from that pic. So correct me if I'm wrong.

Prim one (bow)
Sphere hollowed, path cut to 75%

Prim two (center)
Cylinder hollowed, path cut to 50%

Prim three (stern)
Copy prim one, flip horizontally.

To make them all add up to 25, make the Cylinder 8.334 and the spheres 8.333. Take the X or Y position on the cylinder, add 8.333, place the bow, converse for stern.

I did not do this in game so no guarantees.

Hope that helps.

A