Max Gibson lab notebook

← Build plan

Swamp Hauler 15

Budget welded-aluminum modified-V jon for skinny water: wide, shallow, starboard (right) console with wheel, live well, two bait wells, ice well, bait cooler and drink wells.

Rev D: console is on the starboard (right) side — not a starboard console. Open walkway on port. Helm includes speedo/tach/fuel/volt gauges, marine stereo, and a small plexiglass windshield. Concept design. Not certified naval architecture or a certified drawing — a qualified welder/boat builder must review before cutting metal. Verify capacity and flotation per USCG 33 CFR 183. Prices are estimates (Oct 2026 USD); nothing here is a purchase.

Concept renders (rev C)

AI concept renders — not photos of a finished boat.

Swamp Hauler 15 concept render, 3/4 view
Concept render — flat ramped skid bow (3/4 view)
Swamp Hauler 15 concept render, bow-on
Concept render — flat ramped skid bow (bow-on)
Swamp Hauler 15 concept render, side profile
Concept render — flat ramped skid bow (side profile)
Swamp Hauler 15 concept render, stern
Concept render — flat ramped skid bow (stern)

Rev C: the blunt/pointed entry is replaced with a flat ramped skid-style bow like a classic aluminum jon — one flat 0.125" bow plate ramping up ~30° over ~33", squared at the deck, no stem weld.

Ask Kate about this boat

Kate answers from the published build notes on this page — design, BOM, and build stages. She doesn’t invent specs or prices and never shares private details. About Kate

Overview

ItemValue
LOA15'0" (180")
Beam (gunwale)78"
Bottom width60" chine to chine
Bottom length13'2"
Side height24" amidships, 26" bow
DeadriseFlat ramped skid bow → 4° transom, 6" flat keel pad
Transom20" shaft, 13° rake, 3/16" + doubler
Draft loaded~6–7"
Empty hull (est.)~520–580 lb rigged, no motor/battery/fuel
Design HP40–50 HP remote (USCG formula sketch ≈ 60, estimate only)
Capacity (est.)3 persons / ~650 lb — verify

Plan layout (bow → stern)

                BOW (station 0")
          ======================   flat skid bow, squared ~60" wide at deck
          ////// RAMP //////       ramp 30° over ~33" (0"-33")
          |  anchor locker   |
          |  [ BW1 ]         |     Bait well #1 20x14x10 (12 gal), aerated
          |------------------|     casting deck, raised 12", 0"-42"
            |  [ BAIT COOLER ] |  20 qt, under bow step, 42"-60"
            |                  |
            |  D  open floor D |  D = gunwale drink holders
            |                  |
            |   +----------+   |  starboard (right) console on CL, 24"W x 20"D x 36"H, 84"-104"
            |   | WHEEL  DD|   |  4 drink holders in console top
            |   +----------+   |
            |   [ ICE WELL ]   |  24x14x8.5 (12 gal / ~48 qt) in console-front seat
            |    (pedestal)    |  pedestal seat behind console, ~116"
            |                  |
            |-D----------------D-| aft deck 140"-172"
            | LIVE WELL | BW2  |  Live well port 30x16x10 (20 gal); Bait well #2 stbd 16x12x10 (8 gal)
            |  [BATT]  [FUEL]  |  battery CL, 6 gal tank, bilge pump at transom
            +====[ MOTOR ]=====+  TRANSOM (180"), 20" shaft, anode

Plate & gauge

PartAlloy / thickness
Bottom5052-H32 or 5086-H116, 0.125"
Sides5052-H32, 0.100"
Transom5052/5086, 0.190", doubled to 3/8" at clamp
Floor/casting deck5052 0.090" diamond tread
Wells/console5052-H32 0.080"
Ribs/stringers/chine/gunwale6061-T6 extrusions only (never 6061 formed skin)

Weld schedule

JointProcedure
Keel, chines, bottom buttsER5356 .035, argon 25–30 CFH, continuous both sides
Transom to hullContinuous both sides, 2 passes
Ribs/stringers2" stitch every 6", staggered
Floor/decks1" stitch every 4", sealant between
Well tanksER5356 .030, continuous, water leak-test
ConsoleStitch + continuous on visible seams

GMAW spool gun, ER5356, 100% argon. Stainless brush + acetone wipe; tack every 4"; alternate sides to control warp. Weld outdoors or with fume extraction.

Build stages (3D)

Concept 3D drawings of the major build stages.

Swamp Hauler 15 Stage 1 · Hull shell concept 3D
Stage 1 · Hull shell
Concept 3D — not a photo of a finished boat.
Swamp Hauler 15 Stage 2 · Transom concept 3D
Stage 2 · Transom
Concept 3D — not a photo of a finished boat.
Swamp Hauler 15 Stage 3 · Wells concept 3D
Stage 3 · Wells
Concept 3D — not a photo of a finished boat.
Swamp Hauler 15 Stage 4 · Starboard console (gauges, stereo, plexi windshield) concept 3D
Stage 4 · Starboard console (gauges, stereo, plexi windshield)
Concept 3D — not a photo of a finished boat.
Swamp Hauler 15 Stage 5 · Final assembly (starboard helm) concept 3D
Stage 5 · Final assembly (starboard helm)
Concept 3D — not a photo of a finished boat.

Step-by-step build (one action per step)

Stage 1 · Hull shell

  1. Lay out and cut the two bottom halves from the 0.125" 4'x12' sheets.
    Part B1: 5052-H32 0.125" sheet 4'x12' (bottom halves) ×2 · ~$1,000 · Buy: Metal yard quote
  2. Cut the forefoot panels and keel pad from the 0.125" 4'x8' sheet.
    Part B2: 5052-H32 0.125" sheet 4'x8' (forefoot, keel pad, knees) ×1 · ~$280 · Buy: Metal yard quote
  3. Cut the side panels from the 0.100" 4'x12' sheets.
    Part B3: 5052-H32 0.100" sheet 4'x12' (sides) ×2 · ~$680 · Buy: Metal yard quote
  4. Cut the bow side extensions from the 0.100" 4'x8' sheet.
    Part B4: 5052-H32 0.100" sheet 4'x8' (bow side extensions, splash well) ×1 · ~$225 · Buy: Metal yard quote
  5. Cut the transom skin and 18"x12" doubler from 0.190" plate.
    Part B5: 5052/5086 0.190" sheet 4'x4' (transom + doubler) ×1 · ~$215 · Buy: Metal yard quote
  6. Set the bottom halves on a level jig, keel seam up, and tack every 4".
    Part B11: ER5356 0.035" wire, 1 lb spools ×8 · ~$150 · Buy: Amazon search
  7. Weld the keel seam full-length, alternating sides.
    Part B11: ER5356 0.035" wire, 1 lb spools ×8 · ~$150 · Buy: Amazon search
  8. Bend the sides to the chine angle and tack to the bottom.
    Part B8: 6061 chine angle, 3/16x2 keel strip, gunwale channel ×1 · ~$300 · Buy: Metal yard quote
  9. Stand the transom at 13° rake and tack it in.
    Part B5: 5052/5086 0.190" sheet 4'x4' (transom + doubler) ×1 · ~$215 · Buy: Metal yard quote
  10. Weld chines and transom continuous, both sides, 2 passes on 3/16".
    Part B12: Argon refills (owned/rented cylinder) ×2 · ~$120 · Buy: Local welding supply
  11. Weld on the sacrificial keel strip.
    Part B8: 6061 chine angle, 3/16x2 keel strip, gunwale channel ×1 · ~$300 · Buy: Metal yard quote
  12. Leak-test the shell with water or soapy air before going further.
    Part B13: Abrasives, SS brushes, acetone, cut-off/jig blades ×1 · ~$90 · Buy: Amazon search

Stage 2 · Structure

  1. Cut ten ribs from 2x2 angle and notch them over the stringers.
    Part B6: 6061-T6 2x2x1/8 angle, 20' (ribs) ×4 · ~$240 · Buy: Metal yard quote
  2. Drill limber holes in every rib.
    Part B6: 6061-T6 2x2x1/8 angle, 20' (ribs) ×4 · ~$240 · Buy: Metal yard quote
  3. Fit the three 1.5x3 stringers (CL and 18" off CL).
    Part B7: 6061-T6 1.5x3 channel, 20' (stringers) ×3 · ~$330 · Buy: Metal yard quote
  4. Stitch-weld ribs and stringers to the bottom: 2" every 6", staggered.
    Part B11: ER5356 0.035" wire, 1 lb spools ×8 · ~$150 · Buy: Amazon search
  5. Weld the transom knees to the outer stringers.
    Part B2: 5052-H32 0.125" sheet 4'x8' (forefoot, keel pad, knees) ×1 · ~$280 · Buy: Metal yard quote
  6. Weld the doubler in the motor-clamp area.
    Part B5: 5052/5086 0.190" sheet 4'x4' (transom + doubler) ×1 · ~$215 · Buy: Metal yard quote
  7. Cap the gunwales with 6061 channel.
    Part B8: 6061 chine angle, 3/16x2 keel strip, gunwale channel ×1 · ~$300 · Buy: Metal yard quote

Stage 3 · Foam and floor

  1. Mask limbers and bilge path, then pour foam between stringers in lifts.
    Part B14: 2-lb pour foam kit (~6 cu ft) ×1 · ~$200 · Buy: Amazon search
  2. Pour foam into the side pods.
    Part B14: 2-lb pour foam kit (~6 cu ft) ×1 · ~$200 · Buy: Amazon search
  3. Trim cured foam flush with the rib tops.
    Part B13: Abrasives, SS brushes, acetone, cut-off/jig blades ×1 · ~$90 · Buy: Amazon search
  4. Lay the diamond-tread floor and stitch it to the rib tops.
    Part B9: 5052 0.090" diamond tread 4'x8' (floor, casting deck) ×2 · ~$400 · Buy: Metal yard quote
  5. Seal floor seams with marine sealant.
    Part B31: Marine sealant ×1 · ~$40 · Buy: Amazon search

Stage 4 · Wells, seats and console

  1. Fold and weld the bow bait well (20x14x10).
    Part B10: 5052-H32 0.080" sheet 4'x8' (wells, console) ×1 · ~$180 · Buy: Metal yard quote
  2. Fold and weld the live well (30x16x10) on aft deck port.
    Part B10: 5052-H32 0.080" sheet 4'x8' (wells, console) ×1 · ~$180 · Buy: Metal yard quote
  3. Fold and weld the aft bait well (16x12x10) on aft deck starboard.
    Part B10: 5052-H32 0.080" sheet 4'x8' (wells, console) ×1 · ~$180 · Buy: Metal yard quote
  4. Fold and weld the ice well (24x14x8.5) in the console front seat.
    Part B10: 5052-H32 0.080" sheet 4'x8' (wells, console) ×1 · ~$180 · Buy: Metal yard quote
  5. Leak-test every tank with water.
    Part B10: 5052-H32 0.080" sheet 4'x8' (wells, console) ×1 · ~$180 · Buy: Metal yard quote
  6. Insulate the ice well and gasket its lid.
    Part B18: Ice-well insulation board, lid gasket, drain ×1 · ~$40 · Buy: Amazon search
  7. Plumb live-well aerator, fill and overflow.
    Part B15: Live-well aerator + fill pump + fittings ×1 · ~$95 · Buy: Amazon search
  8. Plumb both bait-well aerators.
    Part B16: Bait-well aerator + plumbing (x2 wells) ×1 · ~$60 · Buy: Amazon search
  9. Strap the bait cooler cradle under the bow step.
    Part B17: Bait cooler 20 qt + strap cradle ×1 · ~$60 · Buy: Amazon search
  10. Build the starboard (right) console on CL and weld it to the floor.
    Part B10: 5052-H32 0.080" sheet 4'x8' (wells, console) ×1 · ~$180 · Buy: Metal yard quote
  11. Cut and install the 8 drink holders.
    Part B19: Drink holders, SS recessed ×8 · ~$40 · Buy: Amazon search
  12. Mount the pedestal seat behind the console.
    Part B27: Pedestal seat base + post + seat (budget) ×1 · ~$140 · Buy: Amazon search
  13. Hang hatches, hinges and latches.
    Part B29: Hinges, latches, gaskets, SS hardware ×1 · ~$150 · Buy: Amazon search

Stage 5 · Rigging

  1. Mount the steering helm in the console.
    Part B20: Mechanical rotary steering kit + 14' cable ×1 · ~$250 · Buy: Amazon search
  2. Fit the 13.5" wheel.
    Part B21: Steering wheel 13.5" ×1 · ~$60 · Buy: Amazon search
  3. Run the 14' steering cable to the motor.
    Part B20: Mechanical rotary steering kit + 14' cable ×1 · ~$250 · Buy: Amazon search
  4. Mount the remote throttle/shift box and run cables.
    Part B22: Remote throttle/shift + 2 cables (14') ×1 · ~$250 · Buy: Amazon search
  5. Wire the switch panel, fuses and battery box.
    Part B23: Switch panel, wire, fuses, battery box ×1 · ~$120 · Buy: Amazon search
  6. Install the nav lights.
    Part B24: Nav lights, LED bow/stern ×1 · ~$50 · Buy: Amazon search
  7. Install the bilge pump and through-hull.
    Part B25: Bilge pump 500 GPH auto + through-hull ×1 · ~$45 · Buy: Amazon search
  8. Bolt on the transom anode.
    Part B26: Sacrificial zinc/aluminum transom anode ×1 · ~$25 · Buy: Amazon search
  9. Install cleats, drain plugs and tie-downs.
    Part B30: Cleats (4), drain plugs, transom tie-downs ×1 · ~$80 · Buy: Amazon search
  10. Clip on the kill-switch lanyard and test it before every run.
    Part B28: Kill-switch lanyard (spare/wireless-ready) ×1 · ~$15 · Buy: Amazon search

Bill of materials

IDStagePartQtyPriceBuy
B1Stage 15052-H32 0.125" sheet 4'x12' (bottom halves)2~$1,000Metal yard quote
B2Stage 15052-H32 0.125" sheet 4'x8' (forefoot, keel pad, knees)1~$280Metal yard quote
B3Stage 15052-H32 0.100" sheet 4'x12' (sides)2~$680Metal yard quote
B4Stage 15052-H32 0.100" sheet 4'x8' (bow side extensions, splash well)1~$225Metal yard quote
B5Stage 15052/5086 0.190" sheet 4'x4' (transom + doubler)1~$215Metal yard quote
B6Stage 26061-T6 2x2x1/8 angle, 20' (ribs)4~$240Metal yard quote
B7Stage 26061-T6 1.5x3 channel, 20' (stringers)3~$330Metal yard quote
B8Stage 16061 chine angle, 3/16x2 keel strip, gunwale channel1~$300Metal yard quote
B9Stage 35052 0.090" diamond tread 4'x8' (floor, casting deck)2~$400Metal yard quote
B10Stage 45052-H32 0.080" sheet 4'x8' (wells, console)1~$180Metal yard quote
B11Stage 1ER5356 0.035" wire, 1 lb spools8~$150Amazon search
B12Stage 1Argon refills (owned/rented cylinder)2~$120Local welding supply
B13Stage 1Abrasives, SS brushes, acetone, cut-off/jig blades1~$90Amazon search
B14Stage 32-lb pour foam kit (~6 cu ft)1~$200Amazon search
B15Stage 4Live-well aerator + fill pump + fittings1~$95Amazon search
B16Stage 4Bait-well aerator + plumbing (x2 wells)1~$60Amazon search
B17Stage 4Bait cooler 20 qt + strap cradle1~$60Amazon search
B18Stage 4Ice-well insulation board, lid gasket, drain1~$40Amazon search
B19Stage 4Drink holders, SS recessed8~$40Amazon search
B20Stage 5Mechanical rotary steering kit + 14' cable1~$250Amazon search
B21Stage 5Steering wheel 13.5"1~$60Amazon search
B22Stage 5Remote throttle/shift + 2 cables (14')1~$250Amazon search
B23Stage 5Switch panel, wire, fuses, battery box1~$120Amazon search
B24Stage 5Nav lights, LED bow/stern1~$50Amazon search
B25Stage 5Bilge pump 500 GPH auto + through-hull1~$45Amazon search
B26Stage 5Sacrificial zinc/aluminum transom anode1~$25Amazon search
B27Stage 4Pedestal seat base + post + seat (budget)1~$140Amazon search
B28Stage 5Kill-switch lanyard (spare/wireless-ready)1~$15Amazon search
B29Stage 4Hinges, latches, gaskets, SS hardware1~$150Amazon search
B30Stage 5Cleats (4), drain plugs, transom tie-downs1~$80Amazon search
B31Stage 3Marine sealant1~$40Amazon search
B32Stage 4Marine gauge set: speedo, tach, fuel, volt1~$160Buy
B33Stage 4Marine-rated stereo head unit (Bluetooth)1~$120Buy
B34Stage 4Marine speakers 6.5" pair1~$70Buy
B35Stage 4Small plexiglass windshield + aluminum brackets1~$110Buy
Core subtotal~$6,390
O1OptionalPaint: etch primer + marine enamel—+$250Buy
O2OptionalUsed 40-50 HP outboard, 20" shaft—+$2,500-$4,500Buy
O3OptionalUsed trailer 14-16 ft—+$600-$1,200Buy
O4OptionalGroup 24 marine battery—+$120Buy
O5OptionalJack plate 6" setback—+$250Buy

Metal priced at ~$5/lb (metal-yard basis); online retail runs higher. Search links open a search for that spec; no listing has been chosen and no affiliate tag is used. Nothing has been purchased.

Every BOM line includes a purchase link per standing order.