The Republic of Singapore Navy and the Royal Thai Navy concluded a two-week bilateral exercise code named Singsiam, the city-state's defense ministry said on Friday.

The exercise, the 17th in its series and hosted by the Thais this year, began on November 25 and drew to a close on December 6.

The ministry said this year's exercise commenced with a shore planning phase at Changi Naval Base. A sea phase was conducted in the Strait of Malacca and the Andaman Sea.

During the exercise, the Singapore side participated with a frigate, a missile corvette, and a submarine, while the Thai side participated with a missile corvette, an anti-submarine warfare corvette, an off-shore patrol vessel, two S-70B naval helicopters and one Dornier-228 maritime patrol aircraft.

The city-state's defense ministry said the exercise this year has expanded in scope and complexity.

"It has evolved from conventional naval warfare exercises to exercises incorporating aerial and underwater warfare scenarios," it added.

The closing ceremony was co-officiated by the two sides at the 3rd Naval Area Command Headquarters, Phuket in Thailand on Friday.