Gregorio H. Jensen, who goes by Yoyo, and his business partner Felipe Ayoso Quenedc, aka Pipi, own Buceo Profundo, a dive training and travel company in Spain. In February of 2008 they brought a group of 14 technical divers to Truk Lagoon for 9 nights and 7 days of diving and had such a great time, they returned with another group of technical divers.
Yoyo’s group traveled from Madrid to Honolulu via Newark and then on to Chuuk via the Continental Airline Island Hopper and after short 45 minutes stops in Majuro, Kwajalein, Kosrae & Pohnpei, arrived September 22nd. Their dive plan – 10 nights at the Truk Stop Hotel and 8 days of exploring the world’s greatest wreck diving destination with the professional staff from the Truk Lagoon Dive Center.
There were 7 rebreather divers in this September 2009 technical group and 1 diver using twin cylinders. In the rebreather group, 6 used Evolution rebreathers and 1 used a Megalodon unit. The Truk Lagoon Dive Center provided a number of its own rebreather cylinders for the rebreather group which made their travel easier and less expensive. And, because of their previous trip in 2008, they had a good idea of what they wanted to do and the previous trip had helped them prepare for this one.
Following are the divers who traveled to Truk with Yoyo & Pipi on this September/October 2009 10 night/8 dive day trip.
* Gregorio H. Gensen (Yoyo) * Felipe Ayoso Queuedc (Pipi)
* Francisco Candeca (Paco) * Francisco Dorado (Paco)
* Juan Bermejo (Picha) Jose Luis Riquer (Robin)
Marcos Cabeza Joaquin Guilabert
* Return divers to Truk Lagoon from the Feburary 2008 Yoyo & Pipi trip
Kelvin and Anabel Davidson, the business and operational managers of the Truk Lagoon Dive Center, had prepared well in advance for this technical group and had more than enough snofolime for the rebreathers as well as an unlimited supply of 99.8% pure medical grade oxygen. Medical grade Helium for Trimix was available and had been used during the 2008 trip but not requested by Yoyo’s group this time.
The divers started each day in the Truk Stop restaurant and enjoyed excellent food and great coffee before opening up their dive lockers to suit up for the days diving. They departed the Truk Stop Hotel’s private dock each morning around 9:00am for their first dive of the day and returned to the hotel about 12:00 noon – in time for a nice lunch in air conditioned comfort and a little rest.
They departed again each afternoon for their 2nd dive of the day about 3:30pm and were back in time to shower up, have a nice dinner, enjoy a cool beverage in the Hard Wreck Café & Bar, or a relaxing 90 minute massage from the hotel’s in-house massage therapist before retiring for the evening. While they rested and slept, Kelvin, Anabel and their local dive staff blended cylinders for the next days diving.
The group made a total of 16 dives during their stay this time and each diver spent about 1,551 minutes underwater exploring the Japanese World War II vessels sent to the bottom of Truk Lagoon in February of 1944 during Operation Hailstone. If you do the math, each diver spent about 25 hours underwater and according to Yoyo, their average dive lasted about 100 minutes, their longest dive was 130 minutes, and their deepest dive was 62 meters (201 feet).
Following are the Truk Lagoon wrecks that Yoyo and Pipi’s group dove during this trip.
Fukikawa Maru (twice) Heian Maru San Francisco Maru
Rio De Janerio Maru Shinkoku Maru Momokawa Maru
Kensho Maru Hoki Maru Nippo Maru
Sankisan Maru Kiyosumi Maru Amagisan Maru
Yamagiri Aikoku Fumitsuki
Gregorio H. Jenso (Yoyo) and Felipe Ayoso Queuedc (Pipi) are both recreational and technical instructors who make a number of dive trips like this each year and they plan to make diving the world famous Truk Lagoon an annual event. You may view their website at
http://buceoprofundo.net/ to learn more about them and their company.