14. The Adjustment.—
This ascertains the amount of the claim and the respective shares of contribution. It is the duty of the master and shipowner to see that timely steps are taken for this purpose.
After a voluntary sacrifice of part of the adventure, and a consequent escape of the rest from imminent peril, the owner of the ship, or in his absence, the master as his agent, has the duty of having an adjustment made of the general average, and has a maritime lien on the interests saved, and remaining in his possession, for the amount due in contribution to the owner of the ship; and the owner of goods sacrificed has a corresponding lien on what is saved, for the amount due him (Ralli v. Troop, 157 U. S. 386).
The work is usually done by an adjuster and often requires a high degree of professional skill. He determines what losses are to be adjusted, what goods contribute, how the values of the receiving and contributory interest are estimated, and when and where the adjustment should be made. He must necessarily bring to this work a special acquaintance with maritime law and the current decisions of the courts on the subject as well as a practical acquaintance with the values involved and the methods of business which they represent. He is, however, merely an expert without any judicial authority and his work is subject to review by the parties in interest. In practice, the shipowner places in his hands the documents from which the necessary facts can be ascertained; the protest of the master and mariners showing the circumstances under which the sacrifice was made and the manifest of the cargo to show the goods involved will be essential; in addition there may be the report of surveyors as to the condition and value of the ship and other property involved and such other evidence as the adjuster requires to have before him, the valuations of hull, cargo, freight and all other items involved in the contribution, excepting the wages of the master and crew, their personal effects and the apparel, jewelry and baggage of the passengers.
[24] Teutonia v. Erlanger, 248 U. S. 521.
[25] See § 10, this title, infra.
[26] The reason is that the master "derives his authority from the implied consent of all concerned in the common adventure" (The Hornet, 17 How. 100). "The character of agent respecting the cargo is thrown upon the master by the policy of the law, acting on the necessity of the circumstances in which he is placed" (The Gratitudine, 3 C. Rob. Adm. 240).
[27] "Where the sacrifice, while for the general benefit of the whole adventure, was also for the particular benefit of the cargo, it was not a subject of general average" (The Mary, 1 Sprague 19).
[28] Expenses voluntarily and successfully incurred, or the necessary consequences of resolution voluntarily and successfully taken, by a person in charge of a sea adventure, for the safety of life, ship and cargo, under the pressure of a danger of total loss or destruction imminent and common to them, give, the ship being saved, a claim to general average contribution (Abbott on Shipping, 537, note).
[29] Thus where a tug abandoned her tow in order to save the tug; the owners of the tow were not entitled to general average contribution because it was not a part of the ship or cargo.
[30] Probably the earliest recorded case is that mentioned in Jonah 1, where cargo was jettisoned to lighten a ship in peril on a voyage from Joppa to Tarshish. The elements of general average were present, though it does not appear that an adjustment was made.