Runway 09 at TNCM/SXM
is 7070' (2155m) long which is adequate but not extravagant for the planes that land there. However, it does have a PAPI at a 3-degree angle which we are bound to honor. In case of a rejected landing, there are obstacles (hills to 1122' on extended centerline) just east of the airport and the missed approach or go-around involves a hefty right turn out through the gap in the hills.
As best I can judge, from the first brick of the runway it is about 600' to the road and maybe 800' to the water's edge. As there is 6742' remaining from the displaced threshold, not all the runway is usable for landing.
On that 3 degree glideslope I'd expect to be maybe 70 feet above the ground crossing the road. However, since the approach area does not offer any obstacles and the runway is pretty short and the missed approach area is rather demanding a lot of arriving pilots would like to be on the lower side of the height range when crossing the fence.
Being a hand-flown visual approach there is some variance here. Maybe 80% of the arrivals would be within 10% of that height. An occasional one will be high and now and then someone is low. There are pictures up here where the plane is clearly "too low" but as long as they did not hit a car or snag the fence it is kind of ignored.
BTW the height I speak of is radar altimeter set to read clearance from the main gear to the surface.
There were other runway headings to which it could have been aligned before all the surrounding area was built up, but the runway aligns very well with the tradewinds that blow in off the Atlantic most of the year.
Happiness is not seeing another trite Ste. Maarten photo all week long.