05/19/2020
For all of you who might wonder about the intricacies of keeping and operating a sub; Triton has been given permission to re-post the 'Sub Blog' - a first hand account from Captain Les Annan onboard the superyacht Axis. He is also a certified sub pilot and operator of the Triton 3300/3 MKII submersible that they have on Axis. Here is his experience of what it is like having a submersible onboard, Part 1:
Sub Blog #1
Since the sub is back I thought I would share some info on it.
The Sub itself
the Triton 3300/3 goes to 3,300 feet with three people (pilot plus 2) for up to 96 hours (no toilet on board, LOL). An average dive is 2 hours to maybe 150 meters or more. Yes, I have been to 3,300 feet a few times. It takes about an hour each way to get to 1,000 meters. The sub is all metric (as it should be, get over it).
It is inspected by ABS (American Bureau of Shipping). ABS over sees everything about the sub and tests the system yearly and me. The sphere has been tested to 1,500 meters and is about 5" thick and takes a year to make. The sphere is not "bolted" to the sub frame but is just sitting there so it can compress. The sub weighs 8,000 Kilos! No problem for the crane on Axis it lifts 18,000 kilos. When the sub is underwater and "neutrally buoyant" a diver can push it with one finger. There is a lot of safety gear on board from food to a water maker. more on that gear later. I drive from FTL to WPB ever day and I feel much safer in the sub at 1,000 meters than on I-95!
The hatch,
it weighs 120 kilos and is spring loaded and easy to open. Rule, Close hatch then dive, the order is important! LOL, Triton has a safety that will not let you open vents to dive unless the hatch is dogged.
Tracking,
There is no "tether" to the surface but I have comms all the time. The surface sends down a corrected GPS signal to the on board Garmin plotter. The surface has "tracking" on the sub at all times with the surface laptop. There is a forward scanning sonar that paints a picture of what is ahead of the sub. You have three depth gauges and one Altimeter (distance to bottom). The sub is "flown" from an iPad connected by Wifi to the sub (no, there is no internet!)
Comfort,
The is a great air conditioning system, makes it very comfortable inside. Even in the Arctic you need the AC on.
One awesome stereo that sounds great!
Big custom leather seats. The sphere is large so you do not feel cramped with three people in it.
The view starts from under your feet to the hatch and all around. Once underwater the view is amazing.
Safety,
Safety is huge with Triton and I must say the after market support from them is like no other vendor I have. I can call anyone one of them and they will walk me through any issues I might have. We have a huge stock of spare parts and custom tools on board Axis and I can and do fix most of the things right on board.
There are 5 ways to ascend the sub and only one needs power.
You do not need power for life support or to ascend.
Rule, never go "under" anything, never go "in" anything. The only thing you need to worry about is man made things nothing in nature will bother you.
To be continued......