Estimates for the naval department, prepared by the secretary of the navy for another year, will in like manner be communicated with the general estimates. A small force in the Mediterranean will still be necessary to restrain the Tripoline cruisers, and the uncertain tenure of peace with some other of the Barbary powers, may eventually require that force to be augmented. The necessity of procuring some smaller vessels for that service will raise the estimate, but the difference in their maintenance will soon make it a measure of economy. Presuming it will be deemed expedient to expend annually a sum towards providing the naval defence which our situation may require, I cannot but recommend that the first appropriations for that purpose may go to the saving what we already possess. No cares, no attentions, can preserve vessels from rapid decay which lie in water and exposed to the sun. These decays require great and constant repairs, and will consume, if continued, a great portion of the money destined to naval purposes. To avoid this waste of our resources, it is proposed to add to our navy-yard here a dock, within which our vessels may be laid up dry and under cover from the sun. Under these circumstances experience proves that works of wood will remain scarcely at all affected by time. The great abundance of running water which this situation possesses, at heights far above the level of the tide, if employed as is practised for lock navigation, furnishes the means of raising and laying up our vessels on a dry and sheltered bed. And should the measure be found useful here, similar depositories for laying up as well as for building and repairing vessels may hereafter be undertaken at other navy-yards offering the same means. The plans and estimates of the work, prepared by a person of skill and experience, will be presented to you without delay; and from this it will be seen that scarcely more than has been the cost of one vessel is necessary to save the whole, and that the annual sum to be employed toward its completion may be adapted to the views of the legislature as to naval expenditure.