The company highlighted the capabilities of the two submarines in meetings in Bangkok recently as part of the Royal Thai Navy's (RTN's) continuing review of submarine platforms, said sources.
This evaluation programme - which has also featured Russia's Kilo-class Project 636 submarine and China's Yuan-class (Type 041) platform - is in support of the RTN's plan to procure up to three submarines within the next few years. South Korea's Daewoo Shipbuilding & Marine Engineering's Chang Bogo-class (Type 209) submarine is also expected to be evaluated by the RTN.
A request for proposals supporting the submarine procurement is expected to be issued later this year if the Thai government allocates sufficient funding. Thai Defence Minister Prawit Wongsuwon has already agreed, in principle, to approve the purchase on the condition that detailed procurement plans are submitted in the current fiscal year, which ends in October.
Thailand does not operate any submarines but has made unsuccessful attempts to acquire the capability over the past few years in light of regional submarine procurement programmes.
According to IHS Jane's Fighting Ships , the Type 209/1400mod has an overall length of 61.2 m and a surfaced displacement of 1,280 tonnes. The Type 210mod is smaller - with a length of 56 m and a surfaced displacement of 1,150 tonnes - and is aimed at navies like the RTN that are looking to acquire their first submarine capability. The Type 210mod is based on the Ula-class submarines in service with the Royal Norwegian Navy.
Of potential significance for Thailand - with relatively shallow coastal waters in the Gulf of Thailand - the Type 210mod is also targeted at navies seeking a subsurface capability effective in littoral environments.
Another factor that could benefit TKMS' bid is that the RTN's submarine squadron, which opened at the RTN Sattahip naval base in July 2014 to provide training, is supported by a German-made Rheinmetall submarine command simulator and is staffed by RTN officers who have received submarine training in Germany, as well as South Korea, over the past two years.
Cut-away model of the Type 210mod advanced compact submarine design by ThyssenKrupp Marine Systems.