Black Water Tek
Black Water Tek is Will Goodman's TDI technical and rebreather school on Gili Trawangan, running from the Blue Marlin site on the island's east shore. It is built around the JJ-CCR: the full TDI closed-circuit ladder from Air Diluent 30m through Air Diluent and Helitrox decompression, Mixed Gas 60m and Advanced Mixed Gas 100m, plus expedition-level training for dives past 100m, for which no formal certification exists. Alongside it runs the open-circuit progression from Nitrox and Intro to Tech up to Advanced Trimix 100m, and TDI instructor ratings from Nitrox to Advanced Trimix Instructor — the shop trains instructors as well as divers, and now builds the Human Factors in Diving coursework into those programmes. Goodman has been teaching from the Gilis for twenty years and in 2014 took an unmodified JJ-CCR to 290m.
- x1 JJ CCR
- x1 DPV
Will developed a passion for diving when he learned to dive in Cornwall, UK. He was quickly captivated by the abundance of shipwrecks along the south coast and…
Goodman has taught technical diving from the Gili Islands for twenty years and is unusually specialised: the JJ-CCR runs through almost every review, from a…
Summarised from public reviews — how we do this- JJ-CCR or Evolution Air Diluent Diver 30m6 days, 7 divesAll inclusive. Entry-level CCR to 30m, within no-decompression limits.£1,350total
- JJ-CCR or Evolution Air Diluent Decompression 40m6 days, 7 divesAll inclusive.£1,500total
- JJ-CCR or Evolution Helitrox Decompression 45m6 days, 7 divesAll inclusive. Sold as a £400 all-inclusive add-on to the 40m course if taken afterwards.£1,600total
- Air Diluent Decompression 40m + Helitrox 45m combination certificationAll inclusive. The two decompression levels taken together.£1,900total
- JJ-CCR or Evolution Mixed Gas Diver 60m5 days, 6 divesPlus gas, lime and dive fees — unlike the shallower CCR courses, this one is not all inclusive.£950total
- JJ-CCR or Evolution Advanced Mixed Gas Diver 100m8 days, 7 divesPlus gas, lime and dive fees. TDI's highest CCR certification.£1,100total
- Expedition CCR Training (beyond 100m)£200/day→ £2,000 for the 10-day minimumCharged per day, excludes gas, lime and equipment; the published programme runs 10 days, so £2,000 before consumables. No formal certification exists below 100m — this is coaching, not a course card.£200per day
Consumables are usually extra. Sorb, helium, oxygen and other gas fills, cenote or marine-park entry fees, certification and registration fees, e-learning materials, and equipment or rebreather rental are commonly charged on top of a course price and are not always reflected above. Where a centre states what it excludes, that is noted on the item.
Course names are the centre's own — see their price list. Indicative only; confirm with the centre before booking.
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