46 C.F.R. § 502.71
If a pleading (including a complaint or counter-complaint filed pursuant to §502.62 or §502.64) to which a responsive pleading is permitted is so vague or ambiguous that a party cannot reasonably be required to frame a responsive pleading, the party may move for a more definite statement before interposing a responsive pleading. The motion shall be filed within 15 days of the pleading and shall point out the defects complained of and the details desired. If the motion is granted and the order of the presiding officer is not obeyed within 10 days after service of the order or within such time as the presiding officer may fix, the presiding officer may strike the pleading to which the motion was directed or make such order as is deemed just. If the motion is disallowed, the time for responding to the pleading shall be extended to a date 10 days after service of the notice of disallowance. [Rule 71.]
46 C.F.R. §502.71