Not trusting to the vagaries of shonky inter-island passenger ferries, I scheduled my visit to Sumba so that I could move on to Sabu, an even drier and poorer island in NTT, on the fortnightly PELNI boat. Needless to say, just for this one fortnight, PELNI is having the barnacles scrubbed off it. The shonky ferries are “lagi kosong” — “currently lacking”, a phrase that strikes horror into the traveler’s heart in much the same way that “rail replacement bus…