The ornamental design for an oarlamp, as shown and described.
FIG. 1 is a top perspective view of an oar lamp of the present disclosure;
FIG. 2 is a bottom perspective view of the oar lamp of FIG. 1;
FIG. 3 is a top view of the oar lamp of FIG. 1;
FIG. 4 is a bottom view of the oar lamp of FIG. 1;
FIG. 5 is a side elevation view of the oar lamp of FIG. 1; the opposite side view being a mirror image thereto;
FIG. 6 is a front view of the oar lamp of FIG. 1; and,
FIG. 7 is a rear view of the oar lamp of FIG. 1.
The broken lines shown in the drawings are directed to environmental structure and are for illustrative purposes only; the broken lines form no part of the claimed design.