Diving  is a  potentially  hazardous  activity.  The materials  contained within  this  magazine  are for informational purposes only and are not intended as a substitute for proper and appropriate training.
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Truk Lagoon, a must do for anyone.
In early March 2003, I  met up with friends for 10 days of  diving in Truk Lagoon. This  was  my first trip  there, and I went mostly because  my friends wanted  to go. While  Truk  shows  up on  several lists  as one of the  top photo sites in the world, I preferred reefs far more than wrecks.

I've returned with a much changed view. If you're a far  travelling diver, Truk  Lagoon  is a  must do, no matter what your preference. Wreck divers will never look at their home wrecks in quite the same way  again, and as artificial  reefs, the wrecks are as good  as real reefs in  many other places in the world.

Although  better  known by its European  name of Truk,  this  vast  atoll  is  now  known  as  Chuuk, renamed    along   native   traditions   when   the
Federated  States  of  Micronesia  was  formed  in 1979. Chuuk is one of the four states of FSM. The islands  have also  been  renamed,  with  resulting confusion on many maps and brochures. The main island  is  listed  as both  Moen  (its former name) and Weno, its new one.
by Wade G. Pemberton
The atoll itself is enormous - over 200 islands scattered across 800 square miles of lagoon. It's nearly  48 miles across, and is surrounded by  barrier reef with  only a few access gaps to the  open  ocean.  74 ships and  a  few planes  went  down  in  Operation  Hailstorm  in February 1944,  with  two  dozen  being  commonly  dived  today. This  report covers  the 13 sites we dove during this trip.
Getting there.

Eventually you'll wind up on a Continental Airlines flight to the airport on Weno (Moen) from either  Guam or Honolulu. Flights are not daily, so if  your flight doesn't go when scheduled, you may encounter multiple day delays in recovering.

I took my normal route, leaving  Orlando 7:00 a.m. on Tuesday the 11th, flying Continental to Houston, then to  Guam via Honolulu. 22  hours later, with  the sun  never  having set, I was  standing on  the Guam sidewalk, my watch  showing it  was 3 in  the morning and my eyes seeing it was late afternoon. I spent two  nights in Guam, and caught the Friday a.m. flight to  Truk, slightly over an  hour down the road.Truk is  9 time zones removed from the east coast  of the US, (+15 hours  with  the  date  change, EST), which  inverts  day  and night. The over-night in Guam went a way toward getting acclimatized to the time change.
In country

The international airport is located on  the north end of the big central island, now renamed Weno.  Being their own  country means that everyone entering  does the immigration thing, data card  and all, and then customs. It's perfunctory  at best, and soon you're out on the bustling street looking for the shuttle.

The Truk
weather is  characterized by a 9-month  rainy season, and a 3-month  really rainy season.  I'd arrived at the  time with the  least rain  (December-March),  but still  we had a short, tropical  rain nearly every  day. It usually  just cooled  things off,  but at  times was downright chilly.
Rooms at the Blue Lagoon.
We shuttled to the south end of the island to the Blue  Lagoon  Resort,  a   pricey  operation   with comfortable  air-conditioned  rooms but little  else that  worked.  There  was  no  hot  water  in  the shower  any  of the three  days  I  was  there, in either of the two rooms. Despite it being the high season,  few were there  and the bar, restaurant, and  gift shop were open only  a few hours a day. However, it's where all  three live aboards pick up passengers, it has  a dive operation,  and most of all, it's  the  only real  choice of a  place to  stay. We were there to dive.
The Boat

The boat portion  of the trip (26 dives) was from Sunday afternoon, March 15 to Sunday morning, March 22nd.  The group of 16 had chartered the
Truk Aggressor II  live  aboard  for  a  week. The Aggressor's  shuttle dingy took us from  the Blue Lagoon  dock to the ship, where we  settled into the cabins, set up our dive gear. It has 7 double cabins, each  with  bathroom  and  shower,  and one  quad cabin, for a total of 18 berths. Cabins were  a  bit  cramped, and  storage  space  was minimal.
The Diving

The wrecks of Truk  lie in the east central  portion of  the  lagoon, south  of  the island of Weno and  interspersed among  the 4 smaller  islands  further south. All are  in the lagoon, where a million years of  jungle runoff and fine  silty sand make visibility a  function of tide and  surge. Much of  either and it  will white  or green out. We  averaged  around  40 foot visibility  most dives, but  a few dropped to  half that. The same jungle debris  produces a strong backscatter component that photographers must contend with.

Dives from landside were  from pangas, usually single dive trips departing at 9:00 a.m. and 1:00 p.m., returning to the dock  after the dive. It's  possible to do a two-dive trip, but in 3 days trying we only succeeded once. They seem to want to go out and back each dive. Dives  off the Aggressor  were scheduled  for 7:30 and  10:30 a.m.,  and  1:30, 4:30, and 7:30 p.m. Meals were sandwiched around the dives.
Immediately noticeable was that the water was very warm (82F+), the fish were the asian pacific variety, and every square  inch of the any sunny piece of wreck above 70 feet had something  growing on it. Hard coral, soft  coral, sponges, razor clams and anemones were everywhere, fighting each other for anchoring.
I divide  the wrecks into two  categories: Those  with many  war  artefacts  in  place, like disassembled zero fighters, china,  bullets, bulldozers, tanks, gas masks, saki bottles, etc, and  those  with  a  hyper-abundance   of  marine  critters,  particularly  soft  corals  and anemones.  Then there are the super  sites that had a lot of both. One wreck has over 58 of those giant anemones, the  counter having lost track near the end of the dive. Even us dedicated reef huggers found every dive to be full of things to see.

I dove  about as hard  as I've ever done  on a trip, ranging  from 70 minutes on the top of the  Heian, chasing octopus and jawfish, to 28 minutes + 9 minutes of deco on the Nippo. Six minutes  at 140' on air will  get you on  the swing  set for a bit. I swam end to end on several of  the 500' wrecks.  We did 5  dives a  day (including  the  night dive)  during the week, over 25 hours  underwater in 8  days. The ears were  totally waterlogged,  muscles tired, brain fried. But like I said, it was as good as it gets. Missing a dive would have been a real loss.
Kiyozumi Maru
Soft coral hangs everywhere.
The Kiyozumi lies on  her port side, in 105' of water, but  there's not much  to see on the sandy bottom. The  entire starboard  side, at a depth  of  about 50 feet,  is  completely  covered  with  heavy  growth, mostly lump corals.  Look among  the lump corals for lots of banded pipefish, a new species for me. Trees of  soft coral  cover  the  starboard  deck  rail,  and dangle  under th e masts, which  extend horizontally with the  ship on it's  side. Farther astern is a single propeller  so big and  so covered  with  growth  that you're not immediately aware of what it is.
Nearby  are many large  colorful anemones  and their  attendant  anemone  fish and cleaner shrimp.  The hold  of the Kiyozumi  has two  bicycles hanging  on a wall,  but I had to  have them pointed  out to me or I'd have  missed them, despite  looking. We did two dives on the Kiyozumi Maru, at 7:30 and 10:30 a.m. on Monday, March 17.
Kansho, Kensho, Kinsho. I've found all three spellings in  the  references, so  will  go  with  the  Aggressor briefing.  She sits upright in 130' of  water, in usually milky  visibility.   A  large  well-decorated  deck  gun occupies  the forward  area,  and makes  for  a good wide-angle  subject. The bridge is easily  penetrated and has a easy  to find radio set. Others  visited the engine  room and  report very  large wrenches  lying around the  area. We did three dives  on the Kansho Maru, at 1:30, 4:30, and our  first Truk night dive at 7:30 p.m. on Monday the 17th.
Golden zoanthids open at night
Unkai Maru
The Unkai  is a 300'  wreck, small by Truk standards, sitting  upright in 135' of  water.  Most of this will be spent below 100 feet, so it'll go by quickly. We came upon a  free-swimming  nudibranch on the bow, then ducked  into the hold  for a glimpse of a big  stack of boots. Be sure to  visit the red lumpy sponge  on the stern  rail that has come  to look like a big valentine. If you  stay down on  the deck (100')  going aft, you can return to  the bow at the 50' level, paying a visit to  the  tops of the  mastheads.  They  are  covered with sponges and finger  coral.  We did 1 dive on the Unkai, at 7:30 a.m. Tuesday.
Fujikawa Maru.

The  Fujikawa Maru  is one  of two  "super" wrecks  in the lagoon, having both a lot of decoration and many wartime  artefacts.  Much  of  the  deck  is shallower than 50' and at  one time it's masts  stood out of the water, before they fell over. This makes for extremely good  natural decoration. It's 6 open  holds are full of cargo,   including   a  completely   disassembled  zero fighter, so it's  a treasure trove of war artefacts.  We did 4 consecutive dives  on the Fuji, including a night dive, and each time  saw new things. Many think this is the best wreck of the lagoon.
A disassembled Zero in hold 6.
Also of  interest  is a  guided tour of  the engine room, several   levels   below  deck.  Compressors,  lights,  a telephone  booth, and  an  enormous engine are stops along  the  way. Besides  natural  decoration  and war artefacts, there are two memorial plaques on the deck midships. One  commemorates the 50th anniversary of Operation  Hailstone,  and   dedicates  the  wrecks  as heritage  for the people  of  Truk  Lagoon.  The  other commemorates  the  life  of  Kimiuo  Aisek, the  native Chuukese who founded  the first dive shop in Truk and led to diving as we know it on the wrecks of Truk.
Nippo Maru.

The  Nippo Maru is  deep, over  150' to  the sand, which makes for  not much  growth. Filter feeders like it above 50 feet, and with lots of sunlight. Basically the shallower the  better. However,  there  are  big  artefacts  on this dive,  including  a  two  man   tank,  probably  the  most photographed telegraph/rudder wheel combination of the week  in the bridgehouse, and  4 field  artillery pieces on the  aft  deck,   sunk  before  they  could  be  unloaded onshore.  We did two dives  on the Nippo on Wednesday morning,  and due  to their  depth,  took  a  longer  than usual surface interval.
A two man tank on the deck.
Yamiguri Maru
A Star Pufferfish wobbles by.
The Yamiguri Maru lies on her port side, in 110' of water. Enter the hull through  the torpedo hole that sunk it and exit laterally through the holds and you'll be treated to a view  of "steel kelp". The wooden flooring of the holds is long  gone, leaving only  the steel beams. Each of these has  become decorated  with growth,  giving  the  entire area  the look  of a  kelp forest. In  the forward hull  are stacks of shells for the 14" guns of the fleet battleships. The  entire starboard  hull is  a forest of lump coral, and the biggest anemones of the trip were on the kingposts. We did  2  dives on  the Yamiguri,  including  Wednesday night.
Fumizuki.

The destroyer Fumizuki was the only  non-cargo (Maru) ship of the week. It lies well west  of the Shinkoku and is  not  shown on  the above  map.  A sleek  boat,  she could  do 35  knots.  The  stark view  of  the V shaped bow,  the deck gun, and  the  sharp propellers  built for speed all make for good natural light wide angle photos, as  does  the bridge and wheelhouse area.  You'll reach 135'  and only get  one dive on this one,  so don't dally too long in any one place, or you'll not see it all.
The stark V of the destroyer bow.
Shinkoku Maru
The anenomes close briefly at 4:30 p.m.
The Shinkoku Maru  takes  the  honours  for the most decorated  ship in  the lagoon.  If it's a  species  that grows in the lagoon, you  can find it on the Shinkoku. Over 500 feet long, it sits upright in 130' of water, so the  kingposts reach  up  to within 30' of the surface. Every square foot  is covered with growth, from razor clams with  multi-colored encrusting  sponge, over 50 anemones of  every color, and lacy soft coral hanging below.  Crinoids are  velcroed to  sponge overgrowing coral overgrowing the deck. Don't miss the encrusted telegraphs at both bow and stern.
The Shinkoku  is not  without  artefacts  as well. Swim through  the passageways to  find  an operating table, complete  with   medicine  bottles,  the   officers  tiled bathing  area,  with  urinals  still  mounted to  the wall. There is also a  radio room complete with radios.

As on all  the wrecks,  local  dive  guides  have  moved some  artefacts  out onto  the  deck area  from inside. Items from the Shinkoku include saki bottles, a teapot, some  of  the  original  china,  and  a  pair  of  12  volt automobile batteries.
A teacup from the officers mess.
Heian Maru
Octopus can always be found on the Heian.
At 514', the  Heian Maru  is  the  largest ship we dove during  the  week. She  was a  combination passenger and  cargo carrier,  doing  duty as a submarine tender when  sunk. There are  spare periscopes  and loads of 20'  torpedos scattered like jackstraws in her holds.  A tour of the engine room here  reveals massive cylinder heads with valve rocker arms located externally to the block. While torpedos are interesting, the Heian will be remembered  for the  octopi.  On my 3  dives  here  (2 Aggressor, 1 landside) I  videoed several, with at least two on each dive.
Shark dive.

For variety, the Aggressor conducts  a shark encounter dive  near one of the  south passes of  the barrier reef. Divers  deploy  in a  loose arc  around  a  feeding  area, where a bucket of fish offal is opened. A shark will grab a  piece  of  fish,  and  dash  away, with  other  sharks chasing it, waiting  for the fish piece to drop. They may dash  in  any  direction,   including  toward  the  divers, making for exciting video. The water is briefly filled with green blood, about 2-dozen  sharks ranging in size from 3  to 6 feet, and  a  maelstrom  of  silt.  When  matters settle  down, a second  bucket is emptied, starting the activity again.
Sharks were close at the shark dive.
Sankisan Maru
A lionfish adds colour.
Half of  the Sankisan Maru  sits upright  in 80' of water. The other half was blown to smithereens in the attack. Still, there are thousands of  machine gun bullets in the remaining  holds, both loose and belted, and nearly the same number of medicine  ampoules. (Caution, $10,000 fine per artefact you are caught with during the airport inspection).  Another  highlight  of  this  dive  was  our discovery  of  a photogenic  lionfish, somewhat  rare in the lagoon.  We'd seen  only one in the other 30 dives. The  lionfish was  new to  the wreck, having  not  been seen previously.
Hoki Maru.

The Hoki Maru was deep but worthwhile for the collection of trucks  and construction  machinery  in  it's  hold.  We used air  on this dive, to go  well  below the 130' limit  of our  regular  32% nitrox.  There  is  a  small  bulldozer  at around  130 feet, then  several trucks parked  on a lower deck, around 142'.  After photographing everything in the area, I  noted I still  had  plenty  of  air  (1500 PSI),  had been  down  nearly 15 minutes, and  only had one minute of deco debt. I stayed longer, took more shots, and then noticed it was 1 minute  at 20 feet. I had 9 more minutes at 10'.  Chagrined, I did my slow ascent to the swingset.
Trucks on Truk.
Betty Bomber
This Betty class medium range bomber lost power while leaving  the nearby airstrip  and pancaked down to the surface,  sinking mostly intact. It is easy to  penetrate inside,  allowing divers to  pose head up  out of the top machine gun canopy.  The plane doesn't  support much growth, as the aluminium skin isn't as good as the steel of  the   ships  for  holding  marine   growth.  The  twin engines broke off  during the  crash and came to rest a few  hundred feet NE  of the main  crash site.  One sits upright, with its  three bladed propeller  intact, a great wide-angle opportunity.
A mostly intact Betty bomber.
Wrecks, or artificial reefs?

I'd  written to a couple  of friends who didn't  much like wrecks  and were  undecided about making  the trip to Truk: "We  frequently sinks ships  here in Florida to  make artificial reefs. Given  sunshine,  warm water,  and a  current  flow of  nutrients,  they will  become  highly decorated  over time." They  decided to  go, and  now agree.  The wrecks  of Truk  Lagoon proved to be the world's ultimate in artificial reefs.
About the author
Wade G. Pemberton spent 25 years as a dabbler  in things  electronic  for  the US Aerospace industry.  He  left in 1997 and now wanders  the  earth  avoiding useful work,  searching  for  warm  water  dive sites, and catching the  occasional  fish. If you're in Florida, drop him a line.

The individual air  conditioning in each  room worked  well, and spacious  dining and lounge facilities  made for easy living. The captain,  Niall Lawlor, an  Irishman  raised in London, is easily  the best captain on  any of the 10 live  aboards I've done.  The boat was well run, we were  well briefed, and he  went out of his way  to make sure we  enjoyed our trip. All food and beverages  are included in the price, and they  do a gourmet job with the meals. Despite 4-5  dives a day, with the food and constantly available  snacks onboard I always seem to gain a few pounds on these trips.

Diving from  the Truk Aggressor  is directly off  the boat. The  diver's BC and regulator are rigged to a tank on a seat on the  big dive deck, with extra gear stored beneath the seat. Don the  gear, head a few  steps to  the  stern, put  on fins, and  jump  in.  Cameras  are handed down  to the diver in  the water. Nothing could  be easier. When  the dive is over, return to  the  same seat. The tank  is filled  between  dives, with  either air  or  nitrox as required by the diver. An ample camera table serves to retool between dives.