There were only services A, B, C, E and M.
A - WTC to Siloso Rd (Underwater World)
B - Tiong Bahru to Allanbrooke Rd (former Central Beach)
C - Tiong Bahru to Garden Ave (Ferry Terminal)
E - Sentosa to Orchard and Marina Centre
M - Tiong Bahru to Beach View (former Sunset Bay)
When service M was withdrawn, service C was extended to cover its
route along Beach View.