Project to Surface tool projecting at an unexpected angle

[TheModelBoatGuy]

Hello,

I am experiencing an issue with the Project to Surface tool not behaving as expected. I am trying to project curves onto a curved surface (the hull of a model ship). The curves I want to project are on a sketch whose plane is parallel to that of the destination sketch (along the length of the model ship). The curved surface I want to project to obviously sits between them.

As a test, I attempt to extrude the test curves to demonstrate that the extrusion happens perpendicular to the source sketch's plane and cuts the curved surface in the expected location. I would expect the project tool to project along the same path.

Unfortunately, when I use the Project to Surface tool, the projection occurs at a strange angle, as if refracting downward and projects to the wrong location.

Any help would be gratefully appreciated.

Link to screencast: https://autode.sk/3q2gQj1

Exported project file attached.

[TheCADWhisperer · Accepted solution]

Set the option for Projection Type to Along Vector and select the sketch plane so that it projects normal to (Perpendicular) to the sketch plane.

[HughesTooling · Accepted solution]

You have the project type set to closest point, you need to change to Along Vector then pick a direction for the projection.