Note: In order to log this cache you must be at GZ. Floating 120' above GZ does not count as visiting GZ. Please do not remove the log from the site.
Disclaimer: “Cache seekers assume all risks involved in seeking a cache.” In order to enable you to make an informed decision I am providing the following information. Please do not attempt this cache if you do not have the proper training. Basic Open Water training does not provide sufficient knowledge to conduct this dive. I would also consider consulting an experienced guide if it has been some time since your last dive.
For those of you who are trained and experienced remember your limits. Follow your dive computer and try not to dive to the limit. Leave a buffer. If you do not have a dive computer please refresh yourself with the Recreational Dive Planner (RDP); photos provided. Using the RDP you can see that at a depth of 103’ (round up to 110’) you are only allotted 16 minutes before you need to begin surfacing or ascending to conduct a multi-level dive (if you know how to plan a multi-level dive). Additionally, a 3 minute safety stop is mandatory so watch your air to ensure you have enough to complete your safety stop. Remember, the deeper you go the quicker you consume air as it compresses and becomes denser. Check your air frequently and remain calm.
I ask that you not remove the log/container from GZ. You will notice that even if you had a 1 hr surface interval you are still in pressure group D for your subsequent dive which only allows roughly 8 minutes at 110’ (depending on your actual bottom time and depth). Computers will be more liberal, however the concept remains the same.
Please remain safe! No cache is worth risking DCS. Please review this link.
Cache Location:
You are looking for this:
The cache is a 6"x7"x3" corrosion resistant metal box
with a lid hinged with 550 chord (green para chord)
and held closed with magnets.
This box protects a Tupperware container that holds the log and pencil.
To locate the cache, enter either cargo bay entrance from either of the centrally located entrances forward deck of the wreck. I intentionally chose an easy penetration so as to avoid the possibility of divers silting out in the interior while manipulating the cache.


The cache is tucked away in the starbord aft portion of the cargo hold shown, near the ceiling on top of some piping. You should see the 550 cord (green para cord) protruding from a recess and tied off to a pipe. This is the 550 cord attached to the cache. If the cache is hanging please replace it atop the pipe.
Please be careful and remember to take into consideration limited no-deco times for deep dives.
If you see the skeleton through the grate on the floor move one room aft.
The Sea Tiger:
This intentionally sunk shipwreck peacefully slipped under the waves in 1999. The history of how our favorite shipwreck became a wreck is quite interesting.
In 1992 the Yun Fong Seong No. 303 (as it was known then) was caught smuggling 93 illegal Chinese immigrants. The Harbor Master was trying to hail the ship but there was no answer, just the vessel barreling down to the pier as the captain abandoned the ship when he was somehow tipped off to being caught.
The five crew members severed various prison terms in what immigration officials say was Hawaii's largest seizure of illegal immigrates. The Justice Department seized the Yun Fong Seong No. 303 and sold it at auction.
The Sea Shepherd Conservation Society bought the ship for $40,000 in 1993 and planned to use it to harass and ram fishing vessels that lay drift nets. The Yun Fong Seong No. 303 was to be renamed UN Resolution 42/216, after the United Nation resolution that bans drift nets. The society's plan fell through and the Yun Fong Seong No. 303 ended up selling it in 1994 to a Vietnamese fisherman who renamed it "Sea Tiger."
The Sea Tiger kept repeatedly leaking oil and fuel into the Honolulu Harbor which led Hawaii Coast Guard inspectors to severally fine the owner on several occasions. Eventually they siezed the vessel where it was abandoned at Pier 40.
The state was planning to tow the Sea Tiger 12 miles out to sea and sink it until Voyager Submarines bought it in 1997 for $1. It took Voyager two years of paperwork and $250,000 in cleanup and preparation costs to get all the approvals from the state Department of Land and Natural Resources, Health Department, U.S. Coast Guard, and the Army Corps of Engineers. They spent $100,000 just getting rid of the 100 gallons of fuel and oil left in it. Voyager is no longer in business and only scuba divers and freedivers frequent the Sea Tiger shipwreck now.
This 189 foot Hawaii shipwreck rests in 123 feet of water. It is the deepest recreational scuba diving shipwreck in Honolulu, Hawaii. This Hawaii shipwreck offers penetration through its cargo holds, inner cabins, engine room, narrow passageways, and stairwells of the ship.

It was also great having kailua_matt along as a crewman during this group adventure!