The Argentine Navy continues the search for the missing submarine ARA San Juan, with assistance from Russia's Yantar and Argentina's ARA Espiro. Despite 54 visualized contacts, none matched the submarine. The ARA San Juan had 44 crew members, and their families are waiting for news in Mar del Plata. There is no set deadline for the search, though Russian collaboration may end. Two hypotheses are considered: internal pressure at depth or an implosion. Argentina has sought help from five companies and received support from 13 countries since November 15, but no results have been found. A battery failure was reported before contact was lost.

Which countries are assisting Argentina in the search for the ARA San Juan?

• United States and Canada

• France and Germany

• Brazil and Chile

• Russia and Argentina

How many crew members were on board the ARA San Juan?

• 60

• 50

• 44

• 30

What are the two main hypotheses regarding the disappearance of the ARA San Juan?

• An internal pressure issue or a collapse/implosion

• A storm or a navigation error

• A mechanical failure or a pirate attack

• A collision with another vessel or a fire on board

How many countries have supported Argentina in the search since November 15?

• 10

• 5

• 13

• 20

What issue was reported before losing contact with the ARA San Juan?

• A navigation error

• A battery failure

• A communication breakdown

• A fire on board