1. International Chamber of Commerce. (2010). Incoterms® 2010: ICC rules for the use of domestic and international trade terms. ICC Publication No. 715E.
The official definition for DAT states: "the seller delivers when the goods
once unloaded from the arriving means of transport
are placed at the disposal of the buyer at a named terminal at the named port or place of destination." This directly matches the question's description.
2. Lysons
K.
& Farrington
B. (2020). Procurement and Supply Chain Management (10th ed.). Pearson.
In Chapter 14
"Logistics in the Supply Chain
" the text explains the various Incoterms. It clarifies that under DAT (Incoterms 2010)
the seller's obligations include unloading at the destination terminal
distinguishing it from DAP where unloading is the buyer's responsibility.
3. David
P. (2015). International Logistics: The Management of International Trade Operations (4th ed.). Cicero Books.
In Chapter 4
"International Terms of Trade
" the author details the responsibilities under each Incoterm. For DAT
it is specified on page 104 that "The seller is responsible for the cost of unloading the goods from the carrier." This confirms the key element described in the question.