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.

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.

Provides 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.

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