National Geographic Channel HDTV (NGCHD)

The team attempt to rescue 14 castaways from a sunken oil tanker. (Repeat).

The helicopter crew investigates a mysterious and abandoned dinghy. (Repeat).

The interception of a drug boat leads to a dangerous situation. (Repeat).

A navy vessel opens fire on a drug boat that won't stop. (Repeat).

A naval vessel is involved in two thrilling interceptions of drug boats. (Repeat).

A Metal Shark crew is involved in the rescue of undocumented migrants. (Repeat).

Paid Programming. (Repeat).

Rare Collectibles TV offers viewers the ability to learn about historic silver and gold coins.

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Silicon Valley's secret drug life revealed: In this enhanced episode, cocaine is the drug of choice. (Repeat).

In this enhanced episode, New Year's Eve revelry means drugs are hot commodities near Times Square. (Repeat).

Highly organized and warring drug gangs manage drug trafficking and distribution at all levels, while politicians and law officials fight hard to protect in a city where poverty and guns drive the drug trade. (Repeat).

The mile-high city is the center of falling profits on illegal Marijuana forcing the drug dealers to replace them with new products. (Repeat).

The drug scenario in Miami is examined. (Repeat).

The drug market and network in Nashville is examined. (Repeat).

A smuggler travels with her 5-year-old. Cocaine is found in beer and hidden in food packaging. (Repeat).

Police find cocaine in metal blocks and in jacket seams, and handle a pregnant carrier. (Repeat).

A smuggler travels with her 5-year-old. Also: cocaine in beer and hidden in food packaging. (Repeat).

Police uncover cocaine in suitcases, ingested as capsules and mixed with a food product. (Repeat).

A new stash method is uncovered; and cocaine is found in children's toys. (Repeat).

A woman is wrapped in cocaine like a mummy; and various bags are kitted out with cocaine. (Repeat).

(New).

(New).

HSI snags a truck loaded with meth, while CBP's beagles sniff out contraband. (Repeat).

(Repeat).

(Repeat).

HSI seizes cocaine-filled tire rims in Puerto Rico and a load of meth and fentanyl in San Diego. (Repeat).

HSI busts an illegal gun operation in NYC, while CBP confronts a meth surge from Mexico. (Repeat).

CBP hunts for drug runners in the jungles of Puerto Rico and finds meth in a car bumper. (Repeat).

CBP screens for club drugs hidden in toiletries, while HSI uncovers meth buried in garlic. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

Paid Programming. (Repeat).

A mystery worth half a billion dollars centers on a single unknown ship. (Repeat).

A look at what hurricanes reveal about the past and future of America. (Repeat).

Examining what can an ancient skeleton reveal about the settling of the Americas. (Repeat).

How did Venice become a maritime superpower, and what caused her downfall. (Repeat).

Drake has gone down in history as the world's most controversial pirate. (Repeat).

O'Malley ascends to Chieftain with a warrior's sword and a woman's tenacity. (Repeat).

The Englishman turned Algerian pirate became ruler of the Tunisian empire. (Repeat).

Brilliant strategist Morgan takes humans, treasure and towns without mercy. (Repeat).

Captain Kidd, the treasure hunter, transitions from pirate hunter to pirate. (Repeat).

The name Blackbeard conjures up images of a brutal, diabolical pirate. (Repeat).

Braver than the men, Bonny and Read are ferocious female pirates. (Repeat).