Due to a shortage of cement it was decided to use PSP on the seaplane ramps and apron.
At the end of June, another temporary PSP ramp was built for use by a second PBY squadron operating from the base.
The PSP ramps were considered wholly satisfactory in service, and it was estimated that their substitution for concrete saved approximately two months' construction time.
In late 1943, expansion of the base was begun with an increase in apron area, structures more permanent than the original canvas-covered ones, and the reconstruction of housing facilities.
Twelve screened frame wards with canvas roofing were provided for a 200-bed bas hospital.