Enhancements for Shipment screens in SNC

Hi Experts

I have a requirement where I need to perform some enhancements to Shipment screen (NOT ASN screen) in SNC.

I have tried searching different Badi's  but they all work with ASN screens only and gets triggered from there. I am not able to find any Badi's related to Shipment screen.

Badi /SCF/ICH_POWL, /SCF/ASN_DETAIL_UI, /SCF/UIMDL_APPCUST all work with ASN screens only.

My requirement is:

1. Default some fields values in Shipment worklist in quick criteria maintenance screen
2. Change button text of "SAVE Draft"
3. Send email on shipment Publish.

From Badi /SCF/UIMDL_APPCUST I can change button text but that too only for ASN screens and for shipment screens it is not triggered.

Please help on the same.