Urban sketch in Charcoal By: sathyapriya Category: My Sketching journeyTagged: charcoal, landscape charcoal sketches, Monochrome, plein air, Sengkang, Singapore, Sketch 2015, Study 2015 April 9, 2015 Tongkang LRT, Charcoal on paper………sketched this from the walkway connecting nearby HDB and carpark. The word “Tongkang” refers to a kind of boat, most of the places in and around Sengkang have been given water/marine related names.