Click here for panorama view of Ubin Jetty
Here is Ubin on Googlemaps.

Going there by bus(bus guide). Bus numbers 2, 29, 59, 109 will take you there. Stop at the terminus.
Take a bumboat ferry, it costs $2.50 per person. The boat departs when there are 12 passengers or when the boat get chartered for $30 when there are not enough passengers.
There is no last ferry service. The boatmen stops ferrying when the crowds thin down. On weekends, the crowds thin out from 4pm onwards going to Ubin and from 8pm returning from Ubin so expect to pay more by sharing and chartering if you are impatient. You may be stranded in Ubin if the boatmen has gone home so don’t hang around too late.

