Compare with the caption of picture 39, which described a boat-trip occurring 10 days later, also to arrive at the "second project": the construction of a small clinic in Na'hana.
Original Spanish caption to this photo:
Jueves 13 mayo 93. Nuestro medio de transporte para dirigirnos al 2do. proyecto en Makira, a 3 horas y media.
Thursday 13 May 1993. Our means of transport to bring us to the second project in Makira, a journey of 3 hours and a half.
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With thankful credit to Damaris Cerdas (a Costa Rican citizen who photographed and annotated her volunteering experience to the Solomon Islands in 1993) for having given me permission to digitize her photo album (August 2016) and publish 98% of it under a Creative Commons BY-SA 4.0 license, which I have done here.