Would the marine carrier be liable in each of the following scenarios applying COGSA?

The failure of the ship to unload its cargo on time at the destination port due to a longshoreman's strike.

The failure of the ship to unload its cargo on time at the destination port due to a route change necessitated by engine failure occurring after the ship left the port of shipment.

A lawsuit by a seller and a buyer against a carrier for damage to goods filed 18 months after their delivery.

The failure of the ship to unload its cargo on time at the destination port due to its overloading at the port of shipment.

The failure of the ship to unload its cargo on time due to the threat of a terrorist attack at the port of destination.

A notice of damaged goods given by a buyer to the carrier 10 days after the buyer's receipt

Please and need a full detail and explanatory response.