Voyage Ready Target
Late June 2026
Gated by winch gearbox; everything else done by ~11 Jun
Critical Path
Track 5 — Winch
Ghana sourcing → ship → base recon → install → align
Parallel Tracks
5
Shop · Engine · Deck · Rudder · Winch
Biggest Open Risk
Rudder ingress source
50/50 chance haul-out required — resolved at first low tide

Timeline June 2026

Track 1 · Off-vessel shop Track 2 · Engine room Track 3 · Deck / welding Track 4 · Rudder Track 5 · Winch (critical path) Shipping / waiting Contingent branch
June
M
1
T
2
W
3
T
4
F
5
S
6
S
7
M
8
T
9
W
10
T
11
F
12
S
13
S
14
M
15
T
16
W
17
T
18
F
19
S
20
S
21
M
22
T
23
W
24
T
25
F
26
S
27
S
28
M
29
T
30
Track 1 · Off-vessel shop
Heat exchanger repair (at shop) in progress — target return 3 Jun
Heat exchanger repair (at shop)
Carrier compressor rebuild replace bearings + piston rings
Rebuild Carrier compressor (bearings + rings)
Reconstruct fishing nets off-vessel, by net crew
Reconstruct fishing nets for the voyage
Track 2 · Engine room
Cummins aux generator fix smoke in engine room + abnormal noise
Cummins gen — find and fix smoke + noise
CAT 3306 aux generator — reassemble + test starts when heat exchanger returns from shop
CAT 3306 — reassemble + test cooling system
Refit Carrier compressor onto its base mount, plumb refrigerant lines, vacuum + pre-charge — runs in parallel with the 3306 work
Refit Carrier compressor (mount + plumb + pre-charge)
Couple Carrier to 3306 + load test only starts once the 3306 is proven stable under load
Couple Carrier to 3306 + full load test
Track 3 · Deck / welding
Outrigger booms — build + install build only after engineer signs off drawings
Build outrigger booms + weld mounts + fit to vessel
Hull reinforcement (above waterline) add doubler plate + continuous weld — runs in parallel with outriggers (separate welder)
Reinforce weak hull section with doubler plate
Track 4 · Rudder
Rudder room inspection at low tide find where water is leaking in
Find leak
Option A — repair leak from inside rudder room only if the leak is reachable internally
Repair leak from inside rudder room
Option B — dry-dock + repair from outside only if the leak needs outside-hull access
Dry-dock vessel + repair from outside hull + refloat (only if needed)
Track 5 · Winch (critical path)
Remove failed winch gearbox already in progress on the vessel
Remove failed gearbox + measure existing base
Ghana engineer scopes the job on the vessel visits Lagos early in the week
Engineer inspects failed unit + confirms replacement spec
Find + buy replacement gearbox in Ghana used unit from a sister fishing vessel
Find, inspect and buy replacement gearbox in Ghana
Transport gearbox to Lagos + clear customs ECOWAS route — road via Benin/Togo or coastal
Ship gearbox Ghana → Lagos + clear customs
Rebuild gearbox mounting base starts only when the new gearbox is physically on site
Rebuild gearbox mounting base on vessel
Install gearbox + align with PTO and capstan align with dial gauge to within tolerance
Install new gearbox + align with PTO and capstan
Load test + sea trial final check before voyage
Load test winch under working load + short sea trial

* Heat exchanger shop return date still to be confirmed — bar shows the target. Update once the shop commits.

Critical dependencies Don't skip the order

  1. Heat exchanger returns from shop → CAT 3306 reassembled + load-tested. The physical refit of the Carrier compressor (mount, plumb, vacuum, pre-charge) can run in parallel with this — but the load test of the Carrier waits until the 3306 is proven stable, because the 3306 mechanically drives the compressor by shaft.
  2. Ghana engineer inspects failed unit → source → ship → arrive → base reconstruction → install + alignment. Fully serial. Base recon cannot start until the new gearbox is physically on-site (need real footprint).
  3. Cummins fixed → second compressor tested. Voyage with only one refrigeration compressor = single point of failure on the catch.
  4. Outrigger scope locked by engineer (~May 29) → fabrication starts Jun 1. Don't cut steel before drawings are signed off.
  5. Low-tide rudder inspection → decide Branch A (internal) or Branch B (slip). Branch B adds ~8 days; book the slip yard the same day if Branch B is called.

Task detail & verification checklists

Each task lists the work steps (left) and the verification criteria that confirm it's done right (right). Tap or click any item to mark it complete — your progress is saved in this browser. The team should treat verification as non-negotiable: a job isn't done until the checks pass.

Progress: 0 / 0 items complete (0%)

Track 1 · Off-vessel shop Shop team + Net crew

1.1 · Heat exchanger refurb (3306) In progress → target return ~3 Jun Shop ETA TBC

Work steps

  • Open HX casing at shop, inspect tube bundle
  • Identify all cracks (not just the known one)
  • Repair cracks — weld or braze per material
  • Descale / chemical clean tube internals
  • Reassemble with new gaskets and zinc anodes
  • Pressure test to 1.5× working pressure
  • Document and transport back to vessel

Verification (job is "done" when…)

  • Written pressure-test certificate from shop
  • Tubes visibly clear (flashlight check both ends)
  • All welds inspected — no porosity / undercut
  • New gaskets fitted, no reused gaskets
  • Zinc anodes new
1.2 · Carrier compressor rebuild 1–3 Jun · 3 days Off-vessel

Work steps

  • Disassemble compressor on the bench
  • Inspect crankshaft journals for scoring
  • Measure cylinder bore (compare to spec)
  • Replace main + rod bearings
  • Replace piston rings
  • Hone cylinders if scored
  • Replace all seals and gaskets
  • Reassemble with manufacturer torque specs
  • Bench-rotate by hand to confirm no binding

Verification

  • Crankshaft rotates smoothly by hand, full revolution
  • Bearing clearances measured + within spec
  • All new parts recorded (receipts kept)
  • Oil pump primed
  • Ready to ship back to vessel for reinstall (Task 2.3)
1.3 · Nets reconstruction 1–7 Jun · 7 days Net crew

Work steps

  • Inventory existing nets — salvage usable panels
  • Confirm materials on hand: twine, headrope, footrope, floats, lead line
  • Cut panels per net plan / target species
  • Mend or knit new panels as needed
  • Hang panels onto head and foot ropes
  • Attach floats and lead weights
  • Rig bridles and otterboard connections
  • Roll and prepare for vessel loadout

Verification

  • Mesh size verified throughout (no oversize panels)
  • No untaped/uncut tears in finished net
  • Float spacing per plan
  • Lead line weight balanced port/starboard
  • Bridle lengths matched (no asymmetry)
  • Ready to load by 7 Jun

Track 2 · Engine room Engine team

2.1 · Cummins aux gen — noise & smoke 1–4 Jun · 4 days Symptoms only — diagnose first

Work steps

  • Short diagnostic run — characterize noise (location, RPM-dependent?) and smoke (color, source)
  • Check air filter and intake restriction
  • Inspect exhaust system for leaks (smoke in engine room ⇒ exhaust leak likely)
  • Pull and pop-test injectors — spray pattern + opening pressure
  • Check valve clearances (cold)
  • Inspect engine mounts and alignment (noise source)
  • Compression test if smoke is blue (oil) or white (coolant/fuel)
  • Repair findings — gaskets, injectors, mounts as required
  • Reassemble and load-test driving its compressor

Verification

  • No visible smoke in engine room during 30-min run
  • Exhaust color clean (light grey, not black/blue/white)
  • Noise within normal range — no knocking or rattling
  • Coolant temp stable under load
  • Holds full rated load for 1 hour minimum
  • Its compressor runs smoothly — fish-hold pull-down OK
2.2 · 3306 aux gen — reassemble & cooling test 5–9 Jun · 5 days Blocked until HX returns

Work steps

  • ⛔ Confirm HX returned + pressure-test cert in hand
  • Reinstall HX with new gaskets and clamps
  • Refill cooling system with correct coolant mix
  • Bleed all air from cooling system
  • Inspect raw-water pump — pull impeller, check for cracks/hardening
  • Replace impeller if any doubt
  • Check thermostat opens at rated temp (bench test)
  • Inspect freshwater pump — bearings, weep hole, belt
  • Start engine, run no-load to operating temp
  • Monitor 30 min no-load; check for leaks
  • Apply load gradually; monitor coolant temp
  • Verify discharge overboard flow is consistent

Verification

  • System pressure test passes (no drop over 15 min)
  • Operating temp stable under full load for 1 hour
  • Strong, consistent discharge water at overboard outlet
  • No visible leaks at HX, pump, hoses, or block
  • Shaft to Carrier rotates freely before coupling
  • No abnormal exhaust
2.3 · Carrier compressor — refit (parallel) + load test (after 3306) Refit: 5–7 Jun (parallel with 2.2) · Load test: 10–11 Jun (after 2.2) Refit in parallel — load test blocked until 2.2 verified

Work steps — Part A (refit, in parallel with 3306, 5–7 Jun)

  • Reinstall rebuilt Carrier compressor on its mount
  • Inspect refrigeration suction + discharge lines
  • Pressure-test refrigeration circuit with nitrogen — leak check
  • Vacuum the system if any line was opened
  • Charge with refrigerant to spec weight
  • Confirm Carrier ready to couple — awaiting 3306 stability

Work steps — Part B (load test, after 3306, 10–11 Jun)

  • ⛔ 3306 must hold full load for 1 hour before this part starts
  • Couple Carrier shaft to 3306 — check alignment with dial indicator
  • Start 3306 → engage Carrier compressor → monitor suction + discharge pressures
  • Pull-down test: how fast does the fish hold reach setpoint
  • Run 4-hour continuous hold test at setpoint

Verification

  • Suction + discharge pressures within manufacturer range
  • Oil sight glass shows correct level, no foaming
  • No abnormal vibration at the shaft coupling
  • Fish hold reaches setpoint within expected pull-down time
  • System holds setpoint for 4 hours continuous
  • No refrigerant leaks (electronic leak detector pass)

Track 3 · Deck & welding Deck/welding team

3.1 · Outriggers — fabricate & install 1–7 Jun · 7 days Scope locks after engineer's visit ~29 May

Work steps

  • ⛔ Engineer's drawings signed off before cutting steel
  • Source steel for booms (pipe/built-up sections per drawing)
  • Cut and fit boom tubes to length
  • Fabricate pivot mounts (the parts welded to the hull/superstructure)
  • Fabricate stays and turnbuckle anchors
  • Fabricate sheave / block at outboard end for otterboard line
  • Locate and mark pivot mount positions port + starboard (symmetric)
  • Weld pivot mounts — full-penetration welds
  • Hoist booms into position, install pivot pins
  • Rig stays, tension turnbuckles
  • Test deployment — swing out, lock, retract

Verification

  • Welds pass visual inspection (engineer signs off)
  • Dye-penetrant test on pivot mount welds if engineer specifies
  • Booms swing freely full range — no binding
  • Lock pins engage positively in deployed + stowed positions
  • Stays under tension — no slack
  • Symmetry check: same boom angle port + starboard at full deploy
  • Static load test with calibrated weight on otterboard line
3.2 · Hull reinforcement (topside) 1–4 Jun · 4 days Runs in parallel with outriggers (separate welder)

Work steps

  • Identify the exact weak section (visual + thickness gauge)
  • Mark the extent of plating to be reinforced
  • Source plate matching hull thickness or stepped doubler
  • Cut doubler plate to size with bevelled edges
  • Grind hull to bare metal in the patch area
  • Tack-weld plate in position — confirm fitment
  • Full perimeter weld — continuous seam, no skip
  • Grind welds flush if cosmetic; leave proud if structural
  • Wire-brush, prime, paint to match hull

Verification

  • Plate flush against hull — hammer test, no hollow sound
  • Weld visual: uniform bead, no porosity, no undercut
  • Dye-penetrant on weld if rust-cause was structural
  • Paint sealed — no exposed steel
  • Internal side checked — no burn-through

Track 4 · Rudder & water ingress Captain / Ops + Welder on standby

4.1 · Low-tide inspection Earliest daylight low tide · 1 day Decision gate

Work steps

  • Identify next daylight low-tide window (confirm with tide tables)
  • Two-person entry to rudder room — torch + camera
  • Photograph dry state of all surfaces
  • Dry the area thoroughly so any active leak shows
  • Identify leak source: stuffing box · weld seam · plate corrosion · through-hull fitting · rudder post bearing
  • Photograph leak source from multiple angles
  • Decide: Branch A (internal fix) or Branch B (haul-out)
  • Record decision in writing and notify owner

Verification

  • Leak source documented with photos
  • Source category written down (one of the five above)
  • Branch decision signed off by owner before any work starts
  • If Branch B → slip yard called same day to book window
4.2A · Branch A — internal fix 2–4 Jun · 3 days If accessible from inside

Work steps

  • Drain standing water from rudder room
  • Clean and dry surface around the leak
  • Apply fix per leak type: re-pack stuffing box / weld interior plate / replace through-hull fitting / regrease + reseal rudder post bearing
  • If welding internally — fire watch + extinguisher posted
  • Allow cure / cool time
  • Monitor through one full tide cycle

Verification

  • Rudder room dry through one full tidal cycle
  • Photograph dry state at next low tide
  • If welded — visual weld check passes
  • Bilge alarm tested in rudder room
4.2B · Branch B — slip + external repair ~4–12 Jun · ~8 days (contingent) Only if Branch A not viable

Work steps

  • Book slip yard (call same day Branch B is decided)
  • Transit to yard
  • Haul out
  • External inspection of rudder, stern tube, surrounding hull plating
  • Repair: re-weld plate / replace fitting / re-seat rudder post seal
  • Also inspect bottom while up — note anything else worth fixing now
  • Anti-fouling touch-up in affected area
  • Refloat
  • Transit back to working berth
  • Monitor through one full tide cycle

Verification

  • Yard inspection report received and filed
  • External weld passes yard's QA
  • Rudder swings freely full range, no new noise
  • Dry through tide cycle post-refloat
  • Bottom condition photo-documented for next dry-dock cycle

Track 5 · Winch gearbox (critical path) Engine team + Ghana engineer + Welder

5.1 · Failed gearbox removal In progress → done by ~3 Jun Already moving

Work steps

  • Disconnect PTO input shaft from Rockford 2-11-D
  • Disconnect chain / coupling to capstan drive
  • Drain gear oil into clean container (keep sample)
  • Photograph existing base, mounting pattern, shaft heights
  • Measure: mounting hole pattern, input shaft height, output shaft height, overall envelope
  • Unbolt from base
  • Hoist out and stage for Ghana engineer's inspection
  • Do NOT scrap — keep as reference for sourcing

Verification

  • All measurements logged in writing + photos
  • Oil sample saved (debris = clue to failure mode)
  • Old gearbox staged safely on deck or in workshop
  • Base condition photographed before any work begins
5.2 · Ghana engineer inspection ~2–4 Jun · 2–3 days Engineer travels in

Work steps

  • Engineer arrives Lagos
  • Inspects failed unit — confirms root cause
  • Measures capstan drum dimensions on vessel
  • Measures chain pitch + sprocket dimensions
  • Confirms PTO output spec (Rockford 2-11-D)
  • Locks target spec in writing: ~35 kN·m output torque, solid shaft, ratio ~25–35:1, pure-gear (no internal clutch)
  • Identifies candidate units in Ghana fleet
  • Reports back with photos + serials of candidates

Verification

  • Target spec signed off on paper (don't rely on memory or chat messages)
  • Candidate list with at least 2 options if possible
  • Each candidate has: maker, model, ratio, torque rating from catalogue (not seller's word)
  • No hollow-output-shaft candidates accepted
  • No clutched candidates accepted
5.3 · Source + payment ~4–6 Jun · 2–3 days Don't skip pre-purchase open-up

Work steps

  • Negotiate price + condition with Ghana seller
  • Pre-purchase inspection: open the gearbox before paying
  • Check: gear flank condition (no pitting/scoring), bearings (no play), housing (no cracks), oil (no water/metal)
  • Verify shaft type is SOLID (not hollow)
  • Verify ratio + torque match the spec from 5.2
  • Photograph internals before close-up
  • Payment + receipt with serial number
  • Crate for shipping

Verification

  • Internal inspection photos + write-up filed before payment
  • Solid output shaft confirmed visually
  • Catalogue torque ≥ 28 kN·m (target ~35 kN·m)
  • Receipt with serial number
  • Crate secure for road / sea transit
5.4 · Ship Ghana → Lagos + customs ~6–15 Jun · ~10 days Schedule risk

Work steps

  • Choose mode: road through Benin/Togo OR sea via coastal shipping OR air freight
  • Prepare ECOWAS export/import documents
  • Engage clearing agent at Lagos
  • Track shipment daily
  • Pre-clear customs paperwork in parallel with transit if possible
  • Customs clearance at Lagos
  • Receive at vessel workshop

Verification

  • Daily tracking update logged
  • Customs documents complete and submitted in advance
  • Receipt of unit + condition check on arrival (no shipping damage)
  • Final measurements taken from the actual unit (not seller's spec) before base recon starts
5.5 · Base reconstruction ~15–19 Jun · 4–5 days Blocked until 5.4 arrives

Work steps

  • ⛔ New gearbox physically on-site with measurements verified
  • Compare new mounting footprint vs. existing base
  • Design new base if footprint doesn't match (drawing + signoff)
  • Cut steel for new/modified base
  • Position base — align input/output shaft centrelines with PTO and capstan
  • Tack-weld in position
  • Verify alignment with straightedge / dial gauge before full welding
  • Full perimeter welds
  • Drill / tap mounting holes precisely to new gearbox footprint
  • Surface prep + paint

Verification

  • Mounting face flat within 0.5 mm across full footprint
  • Mounting holes thread cleanly with correct bolts
  • Input shaft centreline aligns to PTO within tolerance
  • Output shaft centreline aligns to capstan sprocket within tolerance
  • Welds inspected — full penetration, no porosity
  • Base painted, no exposed steel
5.6 · Install + alignment ~19–24 Jun · 5 days Blocked until 5.5 done

Work steps

  • Lower gearbox onto new base
  • Bolt down progressively, in pattern, to manufacturer torque
  • Connect to PTO — check input shaft alignment with dial indicator
  • Install sprocket on output shaft; tension drive chain
  • Check sprocket-to-capstan sprocket alignment (laser or straightedge)
  • Connect oil breather and drain
  • Fill with correct oil grade (ISO VG 460 or per maker)
  • Manual rotation: turn PTO by hand — capstan should rotate smoothly through full revolution

Verification

  • PTO shaft alignment within 0.1 mm TIR (dial indicator)
  • Sprocket parallel + coaxial within 1 mm
  • Chain tension correct — slight deflection mid-span
  • Oil at correct level on sight glass
  • Manual rotation: full revolution with no binding, no abnormal noise
  • Ratio confirmed (count PTO turns vs. capstan turns)
5.7 · Commissioning + sea trial ~25–27 Jun · 3 days Final gate before voyage

Work steps

  • Run no-load at idle PTO speed — listen for noise, check for leaks
  • Increase to working RPM no-load (30 min)
  • Apply light load on wire (test weight)
  • Apply working load (representative of trawl pull)
  • Monitor oil temperature after 30 min and 60 min
  • Test both capstans together under load (per crew SOP)
  • Crew briefing: engage at idle, cut wire on snag, both capstans together
  • Short sea trial — wet deploy a sample net + retrieve

Verification

  • No abnormal noise across full RPM range
  • Oil temperature stable after 1 hour under working load
  • No leaks at seals, breather, or fittings
  • Both capstans pull evenly under load
  • Crew briefed and signed off on SOP
  • Sea trial: net deployed and retrieved cleanly
  • Voyage-ready signoff by owner

This week's action items Before Day 1

  1. Mr. Taiwo: send chain pitch close-up + capstan drum length — gives Ghana engineer reference specs to verify candidates against
  2. Heat exchanger repair shop: confirm return date — currently planned as 3 June
  3. Ghana engineer: confirm arrival date and travel logistics
  4. Captain / Ops: identify next daylight low-tide window and schedule rudder inspection for Day 1 if possible
  5. Welder lead: confirm engineer's outrigger drawings received and reviewed by 31 May
  6. Net crew: confirm 1 Jun start and material list complete