Our navy is not just a coastal maritime defence force. While it isn’t a blue water navy, its ships can sail to the Pacific island of Guam and back:
The Republic of Singapore Navy (RSN) and the United States Navy (USN) have completed the inaugural bilateral Exercise Pacific Griffin in the waters off Guam, the Ministry of Defence (MINDEF) said on Monday (Sep 4).
Read more at http://www.channelnewsasia.com/news/singapore/singapore-us-navies-complete-inaugural-exercise-off-guam-9182794
Sailing there and back were two frigates, RSS Stalwart and RSS Supreme, and an Endurance-class landing ship tank RSS Endurance.
Meanwhile,
The RSAF’s KC-135R Stratotanker completed a three-month deployment to the region, “performing more than 50 missions, refuelling US and Coalition aircraft in the USAF Central Command’s area of responsibility”, the RSAF said in a Facebook post on Sunday (Sep 3).
Read more at http://www.channelnewsasia.com/news/singapore/rsaf-brought-fuel-to-the-fight-for-us-led-coalition-against-is-9182630
Time to start training with and helping out China? But then the US would be upset. But then PM can expect to be invited to Xi’s OBOR parties for friends only.
Thoughts of a Cynical Investor 
1 or 2 weeks sailing in SCS and Western Pacific is chicken feed for RSN.
Even back in the 1990s, 1 of my relatives in the navy had couple of 3-month deployments sailing up & down the Indian Ocean, starting from Indo archipelago & going to Sri Lanka, India, Bangladesh. He did it in an old missile gunboat, much smaller & older electronics with much old fashioned pneumatics.
During the active period of Mid-East activity, RSN had regular rotational 6-month deployments of LSTs to the Persian Gulf. Often used by allied countries as mobile helipad & support & logistics. Later deployments the RSAF also sent Super Pumas together with the LST. Heard that their “hazard allowances” were to “die” for. LOL!!!
Didn’t realise those missle boats were capable of such long trips.