Active: Davenport diesel locomotive 'Moïse' (fitted with a 232 hp Deutz diesel engine, recovered from the Rivière Cerise). Static exhibit: Corpet-Louvet 030T steam locomotive 'Trinité' (works number 1701, built 1925, weight 10.82 t, classified as a French historical monument in 2001) — non-functional, preserved at Saint-James station.
Locomotive Weight
Moïse (Davenport diesel): ~10 t (typical Davenport 4-wheel industrial switcher class). Trinité (Corpet-Louvet 030T, static): 10.82 t (1925 build plate).
Track Gauge
1,168 mm (3 ft 10 in / 117 cm) — the original Usine Sainte-Marie (USM) sugar-mill gauge; historically common in the French West Indies for plantation railways
Braking Technology
Standard industrial compressed-air train brake on Moïse (Davenport/Deutz)
Route Engineering Challenges
1,168 mm (117 cm) heritage gauge — narrow and incompatible with mainline rolling stock, ruling out any future integration with SNCF
Two Bailey bridges over local watercourses requiring ongoing maintenance and periodic re-decking
Tropical climate: salt-air corrosion, heavy seasonal rain (June–November) and Atlantic tropical-storm exposure require off-season volunteer maintenance days (Sundays and Mondays)
Operation depends entirely on volunteer availability — minimum 5 adult passengers per departure means some sailings are consolidated
Recovery and recommissioning of Moïse from the Rivière Cerise was a multi-year volunteer restoration effort
Saint-Marie sits on the wetter Atlantic coast — visibility and photography are best in the December–May dry season ('carême')
Line length
2.5 km one-way; 2.8 km round-trip
Track gauge
1,168 mm (3 ft 10 in / 117 cm) — original USM sugar-mill gauge
Gauge origin
Usine Sainte-Marie (USM) sugar plantation railway, reconstituted for heritage tourism
Bridges
2 × Bailey bridges
Active locomotive
Davenport diesel 'Moïse' with 232 hp Deutz engine, salvaged from the Rivière Cerise