The Ubk chart is likely a reference to the train's schedule or timetable, which includes the departure and arrival times at Ubk station. Unfortunately, I couldn't find any specific information on the Ubk chart.

The Karavali Mail, train number 16511/16512, is a daily express train that runs between Kankavali in Sindhudurg district of Maharashtra and Bengaluru City Junction in Karnataka. The train passes through several stations, including Ubk (Umbalapadu), which is a small station on the Konkan Railway route.