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The ornamental design for a self-elevating line testing vessel for offshore oil lines or the like, substantially as shown and described. |
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FIG. 1 is a front elevational view of a self-elevating line testing vessel for offshore oil lines or the like showing my new design; the spuds being broken for clarity of illustration and the water being shown to place the vessel in its environment;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left elevational view thereof;
FIG. 4 is a right end elevational view thereof;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a bottom plan view thereof.
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