Tonnage Measurement Simplification Act

Tonnage Measurement Simplification Act - Transfers from the Secretary of the Treasury to the Secretary of the department in which the Coast Guard is operating, responsibility for measuring vessels by tonnage before such vessel may be documented.

Requires that a vessel be measured if it engages in international voyage by sea, or it is at least 24 meters in length and is self-propelled.

Stipulates that a vessel not required to be measured by this Act may be measured if requested by the owner.

Specifies instances in which remeasurement shall be required.

Stipulates that a vessel measured prior to the effective date of this Act shall be considered as having been measured as required by this Act.