The ornamental design for a fairingblock, as shown and described.
FIG. 1 is a front-left-bottom perspective view of a fairing block embodying my new design;
FIG. 2 is a front-left-top perspective view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a front side elevation view thereof;
FIG. 7 is a rear side elevation view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a front-left-bottom perspective view of the fairing block with a sonar transducer;
FIG. 10 is a left side elevation view of the fairing block with the sonar transducer; and,
FIG. 11 is a front side elevation view of the fairing block with the sonar transducer mounted to a hull of a watercraft.
Broken or dashed lines in the figures are provided for the purpose of illustrating portions of the fairing block and/or environmental matter and form no part of the claimed design. Shade lines in the figures are provided for the purpose of illustrating the presence of surfaces of the fairing block and are not meant to limit the claimed design.