DETAILED SPECIFICATION SHEET

SPECIFICATION FOR CUSTOM SHALLOW-WATER BOAT: FORT RANDALL PROJECT

1. Scope Vendor shall provide and deliver to the Fort Randall Project a custom boat and trailer that will allow the Corps to navigate the shallow waters of the middle Missouri River. Vendor is responsible for all labor, tools, transportaƟon, material, equipment, and supervision necessary to construct the boat and trailer. Vendor must be registered with SAM (www.sam.gov) and have a DUNS number.

All fabricaƟon shall conform to the technical specificaƟons detailed below. This solicitaƟon package includes this Unabridged Detailed SpecificaƟon and Appendix A: Visual Reference Drawings & Examples. Together, these documents illustrate the intended layout, geometry, fabricaƟon methods, and final appearance of key custom components.

The drawings and pictures in Appendix A are provided to clarify design intent and provide a high-level project visual. However, the exact dimensions, materials, and fabricaƟon methods mandated in this Detailed SpecificaƟon shall govern. The builder is responsible for noƟfying the ContracƟng Officer’s RepresentaƟve (COR) of any perceived conflicts prior to bidding.

2. Technical SpecificaƟons

The following specificaƟons outline the structural, mechanical, and layout requirements for the vessel.

2.1 Vessel Overview & Hull SpecificaƟons

Length Overall (LOA): 24 feet (Float pods not included in this length)

BoƩom Width: 72 inches

Beam (Gunnel Width): 96 inches

Side Wall Height: 27 inches

Transom Height: 27 inches

Hull Shape: Modified V-bow tapering to a flat boƩom

Occupant & Carrying Capacity: Vessel design, stability, and seaƟng layout must safely accommodate a carrying capacity of 6 to 8 occupants.

Hull BoƩom, Tunnel, & Transom Thickness: Minimum 0.190-inch (3/16“) 5086-H116 Aluminum Plate. Transom must include a 0.250-inch (1/4”) 5086-H116 doubler plate in the engine mounƟng zone.

Sides, Console, & Pods Thickness: Minimum 0.125-inch (1/8") 5052-H32 Aluminum.

Floor, Raised Decks, & Bench SeaƟng Thickness: Minimum 0.125-inch (1/8“) 5052-H32 Aluminum. All interior walking surfaces (main floor, raised casƟng deck, aŌ decks, and steps) must be fabricated from 0.125” Aluminum Diamond Plate (Tread-Brite) to ensure rigidity without oil-canning.

2.1.1 Longitudinal Stringers

Floor Stringers (The Tapered Track): Four (4) conƟnuous 3”x3”x0.250” 6061-T6 T-Bars running the length of the hull. Two of these are “flanking stringers.” These flanking stringers must not run parallel to the centerline. They must angle inward to precisely track and hug the exact 1-inch-per-foot taper of the tunnel‘s outer verƟcal walls (starƟng at 28“ wide at the forward iniƟaƟon point and converging to 22” wide at the transom). The tunnel’s verƟcal side walls shall weld directly and conƟnuously to the inward-facing side of these flanking stringers. The other two outer floor stringers shall be spaced midway between the tunnel and the outer chines.

Tunnel Roof Stringers (The Converging Spine): Two (2) 2”x2”x0.250” 6061-T6 Angle stringers shall run longitudinally along the 8” elevated tunnel roof to prevent upward flex under hydraulic pressure. To maintain equal support across the tapering 14.5" flat roof, these two roof stringers must also angle slightly inward from front to back, remaining equidistant from the tunnel’s 45-degree diagonal corner plates along the enƟre 72-inch length of the tunnel.

Mandatory In-Process InspecƟon: See SecƟon 6.3, Hold Point 1 for inspecƟon and sign-off requirements prior to main deck installaƟon.

2.1.2 Transverse Ribs (The Intercostal Grid)

Material & Spacing: 0.190“(3/16”) formed C-channel or 0.250“ (1/4”) 6061-T6 Angle, spaced twelve (12) inches on-center throughout the enƟre boƩom.

Intercostal FabricaƟon: Ribs must be installed using the intercostal method. The longitudinal stringers must remain conƟnuous and uncut. The transverse ribs must be cut into separate segments, fiƩed Ɵghtly between the longitudinal stringers, and have their verƟcal ends welded solidly to the verƟcal webs of the T-bars to create an interlocking 12“x12” structural grid.

Tunnel IntegraƟon: Rib segments must Ɵe directly into the tunnel side-walls and be physically bridged over the top of the tunnel roof to Ɵe the port and starboard halves of the hull together.

Welding & Drainage: SƟtch welding (e.g., 2“ weld, 4” skip) must be used where the ribs meet the flat hull skin to prevent warping the 72-inch boƩom. All rib segments must feature half-moon weep/limber holes at the boƩom corners to allow water to flow to the bilge.

2.1.3 Transom Knee Braces (Engine Torque Support)

QuanƟty & Purpose: Four (4) heavy-duty braces designed to support the transom against the extreme torque and leverage of the 150 HP engine and 6-inch setback jack plate.

Material: 0.250” (1/4”) 5086-H116 plate. The long diagonal edge of each brace must feature a 2-inch-wide welded flange cap (creaƟng a rigid I-beam/T-beam profile to prevent the plate from buckling under compression).

Dimensions & Placement: The verƟcal legs (~24“) shall weld directly to the inside of the transom bulkhead. The horizontal legs (~24”-30“) must land directly on top of the conƟnuous 3”x3" longitudinal floor stringers (never on bare hull skin) to drive the engine thrust forward into the hull.

Layout: Two braces shall directly flank the tunnel (landing on the flanking stringers), and two shall sit on the outer longitudinal stringers.

Stress Relief: A 2-inch radius “mouse hole” must be cut at the 90-degree corner of each brace to bridge over the transom-to-floor weld seam, prevenƟng intersecƟng weld fractures.

2.1.4 AddiƟonal Hull Components

Side Frames: Tied to boƩom ribs with 0.190" chine gussets and running up the flared side walls to the gunnel on every other rib (24-inch centers).

Bow Chevrons: Two to three 2”x2”x1/4” 6061-T6 Angle chevron (V-shape) braces in the forward 5 feet.

AnƟ-Slide Ribs: Two 2-inch angle-aluminum ribs, approximately eight feet in length, welded to the stern end of the hull boƩom to reduce sliding while cornering.

Mandatory In-Process InspecƟon: See SecƟon 6.3.2, Hold Point 2: Internal Structure & Transom Support VerificaƟon, for inspecƟon and sign-off requirements prior to main deck installaƟon.

2.1.5 Advanced Tunnel Geometry

Total Length & Taper: 72 inches (6 feet) long. Tapering smoothly from 28 inches wide at the forward iniƟaƟon point down to 22 inches wide at the transom, maintaining a precise 1-inch-of-width-reducƟon-per-foot-of-length taper. Maximum depth at stern is 8 inches.

Intake Ramp: The forward 40 inches begins flush with the hull via a smooth, radiused (rolled) leading edge and slopes upward to the 8-inch height, creaƟng a gentle 11.3-degree angle. The aŌ 32 inches runs perfectly horizontal to the transom.

Internal Shape (5-Sided Octagon): At the 22-inch-wide transom exit, the 8-inch-high void is shaped via 5 flat interior planes to opƟmize water compression: Flat Roof Width is 14.5 inches.

Diagonal Corners are 5.3-inch-wide plates welded at a 45-degree angle. VerƟcal Side Walls are

4.25 inches tall, welded to the flat hull boƩom.

Exit Shroud: The tunnel roof and side walls shall extend 2.5” to 3” inches beyond the transom exterior. To withstand the extreme hydraulic pressure of the water hump, the shroud must be fabricated from the same 0.190-inch (3/16") 5086-H116 Aluminum Plate as the main tunnel structure and be heavily gusseted to the transom.

Interior Tunnel Finish (CriƟcal Hydrodynamics): All interior surfaces of the tunnel, including the intake ramp, flat roof, and 5-sided walls, must be excepƟonally smooth and fair to ensure clean, laminar water flow. All interior TIG or MIG weld beads must be ground down completely flush with the parent aluminum plate. There shall be no proud (raised) welds, sharp edges, or slag remaining inside the tunnel.

Mandatory In-Process and Upon Delivery InspecƟon: See SecƟon 6.3.3, Hold Point 3 for inspecƟon and sign-off requirements prior to main deck installaƟon and 6.4.1 Delivery InspecƟon 1 for further details on tunnel finish assessment metrics.

Hole-Shot VenƟlaƟon System: To break hydraulic sucƟon during hole-shot, a venƟlaƟon system shall be installed at the tunnel’s apex.

Vent Port: A 2-inch diameter hole shall be cut through the tunnel roof exactly at the apex where the 40-inch intake ramp transiƟons to the 32-inch flat roof (32 inches forward of the transom).

Aerodynamic Clamshell Scoop: A custom aluminum clamshell scoop shall be welded to the exterior (waterside) of the tunnel roof directly over this vent port. Dimensions: 3.5 inches wide by 5 inches long. Rear exit 1.5 inches high. JuxtaposiƟon: Open end facing the transom (aŌ), forward edge ground flush. Rear edge must extend at least 1 inch past the aŌ edge of the vent port.

Valve & Plumbing: Plumbed via heavy-duty marine hose to a 2-inch, heavy-duty Marelon or 316 Stainless Steel ball valve. Handle mounted on the lower face or sidewall of the console for manual control by operator.

2.2 Propulsion & Rigging

Outboard Motor & ShaŌ Length OpƟmizaƟon: 150 HP EFI four-stroke (Mercury or Yamaha).

Motor to be fully rigged. The final determinaƟon of shaŌ length (20-inch vs. 25-inch) is leŌ to the professional discreƟon of the fabricator to opƟmize shallow running, deep water operaƟons, and holeshot dynamics. The fabricator’s selecƟon and staƟc mounƟng height must be engineered to achieve an opƟmal balance of the following performance dynamics:

1) Shallow Running: Minimizing the lower unit profile to reduce resƟng draŌ and prevent skeg drag when jack plate is fully elevated.

2) Deep Water OperaƟons: Ensuring sufficient propeller bite to maintain thrust in heavy current/chop, prevenƟng blowout during sharp cornering, and keeping the powerhead safely above following wakes or surge during rapid deceleraƟon.

3) Holeshot: PosiƟoning the propeller at the precise depth within the tunnels “water hump” to maximize iniƟal thrust and minimize cavitaƟon while breaking hydraulic sucƟon.

Mandatory In-Process and Upon Delivery InspecƟon: See secƟon 6.3.7 Hold Point 7: Builder Pre-Delivery Sea Trials (Mandatory Proof of Performance) and 6.4.8 Delivery InspecƟon 8:

Mandatory Performance Sea Trial & Systems Tests for further details on performance criteria related to shaŌ length and the performance dynamics outlined above.

Engine Cooling: Engine must be fiƩed with a low-water pickup nose cone (e.g., Bob’s Machine Shop) or feature factory dual-intake ports.

Jack Plate: Bob’s Machine Shop AcƟon Series electric hydraulic high-speed jack plate (or equivalent).

To qualify as an ‘exact equivalent’, any proposed alternaƟve must meet or exceed:

1) Provide exactly six-inch (6") setback.

2) Minimum 6.0 inches of acƟve verƟcal hydraulic travel, yielding a total system rise of 7.5 inches above the standard transom via a built-in 1.5-inch staƟc structural offset.

3) Feature a completely integrated hydraulic pump (no external reservoir/pumps inside hull).

4) Be rated by the manufacturer to achieve full liŌ in approximately 6.0 seconds and demonstrate full travel in less than 8.0 seconds under operaƟonal load during sea trials.

5) UƟlize high-tech polymer bearings with built-in automoƟve-style grease fiƫngs.

Mandatory Upon Delivery InspecƟon: See SecƟon 6.4.6 Delivery InspecƟon 6: Jack Plate Performance VerificaƟon: Verified equivalent characterisƟcs per SecƟon 2.2.

6) Complete Kit Requirement: Include all necessary mounƟng hardware, wiring harnesses, relays, hydraulic fluid, and a pre-installed, integrated sending unit fully compaƟble with NMEA 2000 or the specified console-mounted height indicator gauge.

Propeller: Stainless steel, double-cupped 4-blade propeller with proper low pitch (e.g., 15“- 17”). Examples: PowerTech CF4 or Baumann Blaster.

Compression Plate: Heavy-duty aluminum tunnel compression plate (20-24“wide) fastened to the AV plate, extending 4-6” forward.

Steering: Full hydraulic steering.

Transom & FlotaƟon Pods:

Stepped FlotaƟon Pods (2): Outside stern on both sides.

Length and alignment: 16 to 18 inches total length. The aŌ edge of the pod shall align approximately flush with the leading edge of the outboard’s lower unit.

Width and Center Gap: 24 inches wide each (at boƩom). When mounted on the 72-inch boƩom hull, this shall create a 24-inch-wide center motor well between the pods. (Builders Note: The 24-inch-wide center gap and parallel inner walls are criƟcal for water compression. The 16–18-inch pod length must not extend pat the steering pivot-arc of the specified 150 HP outboard on the 6-inch setback, guaranteeing unobstructed lock-to-lock maneuverability.

Top Width and Wall Geometry: Outer walls hall angle/flare to match the 96” hull beam. The inner walls must be plumbed verƟcally and run parallel to the boat’s centerline.

Single-Tier Boarding Step: The top of each pod shall feature a single integrated, recessed flat boarding step (min. 16“ D x 24” W) siƫng approximately 12” below the top gunnel. Step treads must be 0.125 Aluminum Diamond Plate with aggressive non-skid, supported by an internal verƟcal load-bearing bulkhead.

Safety Handles: A heavy-duty aluminum grab handle shall be welded to the inside of the transom directly above the step on each side.

BoƩom Angle: Upward anƟ-plow angle yielding 1.5” rise at the rear edge.

Drainage: Threaded garboard drain plugs at lowest point, completely sealed from the splashwell drainage system.

2.3 Deck & Interior Layout (Bow to Stern)

Mandatory In-Process InspecƟon: See SecƟon 6.3.4, Hold Point 4: Sub-Deck Systems (Fuel & FlotaƟon) & CG VerificaƟon for inspecƟon and sign-off requirements prior to main deck installaƟon.

Mandatory Upon Delivery InspecƟon: See SecƟon 6.4.3 Delivery InspecƟon 3: Dimensional & Layout Conformance: Tape measure verificaƟon of criƟcal dimensions.

Forward Deck & Bow Layout: The enƟre forward secƟon of the vessel shall be a large, single level raised deck with a massive central storage compartment.

Raised Forward CasƟng Deck: The forward-most 84 inches (7 feet) of the vessel shall be a raised, flat casƟng deck, siƫng at a height of approximately 18 inches above the main floor.

Forward Bulkhead / Step-Down: At the 84-inch mark, a verƟcal bulkhead shall create a clean, ~18-inch step-down from the raised casƟng deck to the low main floor of the central cockpit.

Bow TransiƟon Shelf: Raised forward casƟng deck will have smooth transiƟon up to the bow, with a horizontal shelf directly behind the bow of at least twelve inches, to facilitate stepping in and out of the boat.

Permanently Welded Bow Deck Safety Railing: A 36-inch-tall safety railing system shall be permanently welded to the perimeter of the forward bow deck. The system shall be split into two symmetrical, independent secƟons (Port and Starboard) to create a clear, unobstructed 24 to 30-inch walk-through gap at the absolute Ɵp of the boat for safe personnel exit/entry during beaching operaƟons. Fabricated from 1.5-inch Schedule 40 Marine-Grade Aluminum Pipe (6061-T6) with a conƟnuous horizontal mid-rail at 18 inches high. VerƟcal stanchions must pass through the deck plate and weld directly to heavy-duty under-deck structural framing.

Main Forward Deck Storage Compartment (Single Compartment, Dual Doors): One single, large storage compartment shall be centered in the aŌ porƟon of the raised forward deck.

LocaƟon: The compartment opening shall begin 42 inches aŌ of the bow Ɵp.

Dimensions: The total hatch opening shall be approximately 56 inches wide (28" Port + 28" Starboard) by 40 inches long. This opening provides access to one single, massive, unobstructed storage bay below deck.

Maximized Depth: By centering the compartment, its floor shall be fabricated to achieve a maximum possible depth of 16 to 18 inches at the boat's centerline, tapering upward as required to conform to the hull's interior V-shape.

Lid ConstrucƟon & Hinge OrientaƟon: The 56"x40" opening shall be covered by two side-by-side doors, each approximately 28"x40", braced to support 250 lbs (e.g., minimum 7 psi support). To ensure maximum safety and clear walkways, the hinges for both doors must be located on their forward edge. This allows the doors to swing up and forward, resƟng securely against the raised forward casƟng deck and keeping the gunwale access paths completely unobstructed.

Forward Gunwale Storage Lockers & SeaƟng: Inverted-L shaped “rod lockers” shall run along the forward gunwales (ahead of the center console footprint), serving as addiƟonal seaƟng with cushioned tops.

Layout: Two "rod locker" style storage units shall run longitudinally along the Port and Starboard gunwales. They shall begin at the aŌ edge of the 40"x40" forward storage compartment and extend back to the forward edge of the elevated command pod.

Shape & Dimensions: The lockers shall be an inverted-L shape, approximately 18 inches wide at the top and 6 inches wide at the boƩom, with a height of approximately 18 inches. This shape creates a narrow footprint on the floor while maximizing seaƟng area and storage volume. Tops fiƩed with hinged, gasketed lids and covered with cushions.

Bow TransiƟon Step:

To safely bridge the 18-inch verƟcal rise from the main floor to the forward casƟng deck, a structural aluminum step will be fabricated between the port and starboard gunwale seats. The builder may fabricate this either as a fully enclosed dry-storage box step (resƟng on the floor with a flush hatch) or as an open, elevated "bridge" step (leaving the space beneath open for loose gear). Regardless of the build style chosen, it must meet the following criteria:

Height (Rise): 9 inches (Splits the 18" bulkhead rise evenly into two ergonomic steps).

Depth (Fore/AŌ): 14.5 inches (OpƟmizes stepping stride and safe rearward step-downs).

Width: Custom (Spans the exact floor gap, welded directly into port/starboard seat frames).

Adjacent Seat: Leaves exactly 22" of clear cushion length aŌ of the step on the forward gunwale lockers for one passenger per side.

Structural Support: Top tread must be internally braced with C-channel/angle to support dynamic jumping loads. If built as an elevated bridge step, a 2-3 inch verƟcal toe-kick lip must drop down from the forward edge to prevent leg entrapment.

Deck TracƟon: Marine EVA Foam (Top tread covered in routed EVA foam, e.g., SeaDek. No bare metal or standard diamond plate).

Drainage: Must not block deck water. If built as an enclosed box, minimum 1" limber holes must be cut at boƩom aŌ corners for uninterrupted drainage.

Main Deck (Cockpit Floor): The primary floor on the Port and Starboard sides shall be a single, conƟnuous level set at the lowest possible height (approx. 3.125" above the hull boƩom), creaƟng two deep, open walkways with a minimum interior freeboard of ~24 inches.

Forward Console "Command Pod": A dedicated, 12-inch high, 24-inch wide, 54-inch long elevated plaƞorm shall begin at the 90-inch mark (from transom), on which the console and captain's seaƟng are mounted.

Helm StaƟon & SeaƟng:

Center Console (Notched "Low-Profile" Design): A center console measuring 24 inches wide by 18 inches deep shall be mounted at the forward edge of the Command Pod. To ensure a clear line of sight for all operators, the console shall feature tall outer wings (50-52" high from the plaƞorm) and a center dash dropped by 4 to 6 inches from the wing height (44-48” in height above the raised command pod floor).

The Electronics MounƟng Brow: To provide a secure mounƟng surface for navigaƟon electronics, a flat, horizontal shelf or "brow" shall be integrated into the top of the console. This brow shall be approximately 6 to 8 inches deep (front-to-back) and span the width of the dropped center dash, located directly behind the windshield. Two (2) stainless steel, drop-in marine cup holders (sized to accommodate 3.5-inch diameter tumblers) shall be installed flush into the far port and starboard corners of this brow. The cup holders must feature boƩom drain fiƫngs plumbed with tubing to route trapped water down through the console and out to the self-bailing main deck. The console face below this brow shall be sloped at approximately 15.5 degrees to provide ergonomic access to gauges and switches.

Windshield & Grab Rail: A low-profile acrylic windshield shall be mounted on the lower center dash, protected by a conƟnuous 1.5-inch Schedule 40 Aluminum grab rail that follows the console's notched contour.

Under-Console Layout (Split Rigging/Storage): The interior of the console shall be logically divided. The Starboard side shall be kept open as a dedicated service area for rouƟng all electrical and mechanical rigging from the bilge to the helm. The Port side shall feature a custom aluminum storage shelf with a 2-3 inch containing lip, located approximately 12-14 inches below the dash, for secure storage of small items.

Tunnel VenƟlaƟon Control: The manual handle for the 2-inch tunnel venƟlaƟon ball valve (as specified in SecƟon 2.1) shall be mounted on the lower face or lower port sidewall of the console for easy ergonomic reach while underway.

Jack Plate Control & Footrest: The hydraulic jack plate shall be controlled via a heavy-duty, floor-mounted, foot-operated "Up/Down" switch (example: SKU: HT-1-DP). To protect this switch, a split gull-wing footrest system shall be fabricated. Two separate, heavy-duty angled footrest boxes shall be integrated into the base of the console, leaving a protected 10- to 12-inch-wide center channel at floor level for the installaƟon of the foot switch.

Helm & Steering Controls: A marine-grade, adjustable Tilt-Helm shall be mounted on the lower center dash panel so that the center of the steering wheel hub is posiƟoned at 42 to 43 inches verƟcally from the command pod floor. Equipped with a high-quality, 13.5-inch diameter stainless steel steering wheel featuring an integrated spinner knob.

ThroƩle Control Placement: The throƩle control binnacle shall be surface mounted on the starboard side of the console at a height of approximately 39 to 41 inches from the plaƞorm floor, aligning with the natural relaxed hand posiƟon.

Captain's Chair/Leaning Post: An adjustable captain's seat measuring 24 inches wide by 18 inches deep shall be mounted 18 inches aŌ of the console on the command pod. Must be installed on four adjustable legs and fabricated with a 6-inch tall perimeter lip at its base to create an open storage tray beneath. Must be a heavy-duty, marine-grade bolster-style leaning post. The flip-up bolster is mandatory for standing/leaning operaƟon.

Forward Console Storage Seat: A forward-facing bench seat measuring 24 inches wide by 18 inches long with a cushioned, hinged lid shall be mounted on the main hull floor (not the elevated pod), directly in front of the console, providing access to dry storage beneath.

Mid-Ship Crossover Gap: An 18-inch long (from 72" to 90" from the transom) secƟon of the floor shall remain at the low main deck level, creaƟng a clear path to cross from Port to Starboard between the aŌ spine and the forward console pod.

Crossover Rigging ProtecƟon: All fuel, steering, and electrical lines passing through the crossover gap must be protected by a heavy-duty ramped and armored rigging chase. The floor of the crossover shall feature plate aluminum angled on either side to reach a 2.5 to 3-inch height, providing a protected, full-width conduit beneath it.

AŌ Centerline Spine (Mechanical Locker): A 17.25-inch high, 30-inch-wide raised spine shall run from the forward bulkhead of the aŌ deck area forward to the crossover gap (ending 72 inches from the transom). This spine will enclose the aŌ porƟon of the tunnel and house the mid-ship baƩery locker. Access via large, waterƟght verƟcal hatches on its Port and Starboard sidewalls.

AŌ Centerline Bench Seat: A forward-facing cushioned bench seat shall be mounted on the forward-most end of the 17.25-inch high AŌ Centerline Spine, directly overlooking the mid-ship crossover gap. The seat shall span the 30-inch width of the spine and have a footprint depth of 16 to 18 inches, including an integrated, cushioned backrest.

AŌ Cockpit Bench SeaƟng (Gusseted CanƟlever Design): To maximize floor space, four (4) modular, canƟlever storage boxes shall be fabricated. Two shall be installed end-to-end on the Port side, and two on the Starboard side. They will begin at the forward bulkhead of the aŌ deck and extend forward for a total of 48 inches. Must have a trapezoidal cross-secƟon (e.g., 16" deep at the top, ~12-13" deep at the boƩom) to conform to hull flare. Supported from beneath by heavy-duty triangular aluminum gussets Ɵed to side frames, maintaining a 3 to 4 inch "toe-kick" floor clearance. Tops fiƩed with hinged, gasketed lids and cushions.

MulƟ-SecƟon "Boxed" Splashwell & AŌ Deck:

Layout: The stern shall feature a mulƟ-secƟon, self-bailing splashwell separated from the interior by a raised aŌ deck structure and a solid, waterƟght bulkhead.

Raised AŌ Service Decks: Located immediately forward of the splashwell, two raised service decks shall be fabricated in the port and starboard corners. Each deck shall be 30 inches wide by 20 inches deep (front-to-back), siƫng at a height of 17.25 inches above the main floor.

Central AŌ "Work Step": Located between the service decks, a central raised deck 36 inches wide and 10 inches deep (front-to-back) shall sit at the matching 17.25-inch height, forming a conƟnuous U-shaped aŌ plaƞorm.

Primary Bilge Access: A large, rectangular, flush-mount, guƩered aluminum access hatch (e.g., 20"W x 8"D) shall be installed on the top surface of both Port and Starboard service decks for bilge access.

Forward Bulkhead: The forward verƟcal bulkhead of this enƟre aŌ deck structure must be a solid structural wall, welded waterƟght to the main deck. To allow for main cockpit drainage, two limber holes (min. 2" diameter semi-circles) must be cut through the bulkhead at the absolute lowest points on the Port and Starboard sides, flush with the main floor.

"Boxed" Splashwell Design:

Center Motor Well (Deep SecƟon): The central 36 inches of the splashwell shall be 20 inches deep (front-to-back) to provide full Ɵlt clearance. The floor of this deep center secƟon shall be elevated to create a total well depth of approx. 13 to 14 inches from top of transom. Builder must verify final floor height ensures full, unobstructed Ɵlt/trim clearance.

Side Decks (Shallow SecƟons): On either side of the center well, the splashwell shall step up to a shallower depth, extending only 10 inches deep from the transom.

Inboard Scupper Drainage: The deep center well must be self-bailing via two large-diameter (min. 2-inch) scupper drains. The splashwell floor must be fabricated with a slight "V" or crown, making the centerline scuppers the lowest point to ensure 100% posiƟve drainage.

Gunwale Grab Rail System: A permanently welded grab rail system fabricated from 1.5-inch Schedule 40 Aluminum Pipe to ensure personnel safety throughout the cockpit.

Forward Gunwale Rails: A conƟnuous, 6 to 10-inch high grab rail shall be installed along the top of the gunwales, running from the aŌ stanchion of the 36-inch tall bow railing back to the forward edge of the elevated command pod.

AŌ Gunwale Rails with Helm-Side Boarding Gate: A clear, unobstructed boarding gate of at least 36 inches shall be leŌ open on both the Port and Starboard gunwales, located directly adjacent to the helm staƟon (from the front of the command pod, extending 36 inches aŌ). AŌ of this gate, a conƟnuous 6- to 10-inch-high grab rail shall run along the gunwales all the way to the stern.

Console Side-Grab Handles (VerƟcal D-Loop): A heavy-duty "D-Loop" or "Hoop" style grab handle, 12-16 inches tall, shall be mounted verƟcally on the aŌ-most third of both Port and Starboard console sides. Handles must project no more than 3 to 4 inches to ensure walkways remain clear. VerƟcal center approximately 38-40" above floor.

Paint & Surface Finishes: The vessel is not to be delivered as bare aluminum.

Walking Surfaces: All interior walking surfaces (decks, floors, steps) must be coated with a light-colored, abrasive spray-in non-skid liner to ensure maximum tracƟon and durability.

General Interior: All other interior aluminum surfaces (hull sides, console, bulkheads) must be painted with a durable, light-colored marine-grade paint (maƩe or semi-gloss) to reduce glare and heat absorpƟon.

Mandatory In-Process InspecƟon: See SecƟon 6.3.6, Hold Point 6: Surface Prep (Paint & Non- Skid): Required SubmiƩal: “Surface Prep Log”. DocumentaƟon demonstraƟng proper etching and primer applicaƟon.

2.4 Systems & Hardware

BaƩery & Electrical System (Mid-Ship Power Locker):

BaƩery LocaƟon: The dual AGM baƩeries (min. 1000 MCA) shall be mounted directly to the floor stringers on the Port and Starboard sides of the main tunnel, at the forward-most end of the tunnel structure (approximately 6 feet from the transom), housed securely underneath the 17.25-inch high AŌ Centerline Spine.

Access: Access to the baƩeries, dual-baƩery switch, and AutomaƟc Charging Relay (ACR) shall be via large, gasketed, verƟcal hatches on the Port and Starboard sides of the aŌ spine.

Shutoff Switch: Master power baƩery shutoff switch installed.

Cable Gauge: All-engine baƩery cables shall be sized to limit voltage drop to less than 3% under peak cranking load, in strict accordance with ABYC E-11 guidelines. Given the physical distance, the Builder must calculate the true round-trip wire length to ensure compliance. The Builder shall uƟlize a minimum of 2 AWG, Ɵn-plated, marine-grade copper wire (UL 1426); standard automoƟve copper wire is strictly prohibited.

TerminaƟons: Voltage drop, and corrosion frequently occur at connecƟon points. Therefore, all baƩery cable terminaƟons must uƟlize heavy-wall, Ɵn-plated copper lugs. These lugs must be mechanically crimped using a specialized heavy-duty crimping tool (hammer-crimping or soldering alone is unacceptable) and enƟrely sealed with adhesive-lined, dual-wall marine heat shrink tubing to prevent moisture intrusion and corrosion.

Mandatory In-Process and Upon Delivery InspecƟon: See SecƟon 6.3.5, Hold Point 5: Electrical Material, TerminaƟon & Factory Load Test SecƟon and SecƟon 6.4.2 Delivery InspecƟon 2:

Electrical System Voltage Drop for further details on electrical system assessment criteria.

Fuel Tank: Minimum 40-gallon tank mounted within the Forward Console Command Pod.

(Builder's Note: This forward compartment is physically separated from the aŌ baƩery compartment by the 18-inch mid-ship crossover gap, ensuring complete isolaƟon of the fuel and primary electrical systems).

Bilge Pumps & Drains: Two (2) 2000 GPH bilge pumps and two (2) heavy-duty threaded garboard drain plugs.

Pump Location: Pumps must be mounted at the absolute lowest, aft-most point of the hull, directly against the interior of the 27-inch transom.

Serviceability Requirement: All bilge pump wiring and discharge hoses must be installed with a minimum 24-inch "service loop" (excess slack) to allow the pumps to be pulled completely up through the aft deck access hatches for replacement or servicing.

Instrumentation & Electronics Network:

The console shall be equipped with at minimum the following:

1) Tachometer, stand-alone Water Pressure Gauge, Fuel Gauge, Trim Gauge, Jack Plate Height Indicator Gauge, Hour Meter, and a Voltmeter.

2) A marine-grade, waterproof 12V / USB combination charging port shall be installed on the console dash.

3) A NMEA 2000 Network Backbone must be installed and connected to the engine and any compatible electronics to allow for data sharing.

4) A digital fuel flow sensor shall be installed in-line and connected to the NMEA 2000 network to provide real-time fuel economy data (GPH/MPG).

2.4.1 Interference-Free Rigging: All electrical wiring, control cables, and hydraulic/fuel hoses must be routed and secured to prevent chafing, pinching, or binding during operaƟon. During the sea trial, the COR will perform lock-to-lock steering tests and fully cycle all systems (hatches, jack plate) to ensure no interference exists. Any idenƟfied points of interference will consƟtute an inspecƟon failure.

Safety & Hardware: USCG safety equipment, six (6) docking cleats, two bow eyes, interior hull mounted USCG fire exƟnguisher, life ring, built-in horn, standard navigaƟon lights, capacity placard, emergency shutoff lanyard, spare plugs.

2.4.2 Corrosion Control: All hardware, fasteners, and metallic components must be installed in a manner that prevents galvanic corrosion. All stainless-steel fasteners (bolts, screws, snaps) used in contact with aluminum must be fully isolated using nylon/Teflon washers, bushings, and a coaƟng of a suitable marine-grade anƟ-seize compound (e.g., Tef-Gel). No bare stainless steel shall be in direct contact with bare aluminum.

2.5 Trailer

Type: Tandem axle galvanized steel trailer (5000-5500 lbs. each) with electric-over-hydraulic brakes on both axles and 15-inch wheels.

Calipers & Rotors: Stainless Steel Calipers and Rotors (or at least Dacromet-coated components) rather than standard painted steel.

Actuator Pump: Ensure the electric actuator pump (the brain of the EOH system) is mounted high up on the trailer tongue near the coupler, well above the maximum water-submersion line.

Support: Rollers on the front two-thirds, bunks on the rear third.

Features: Submersible LED lights, guide rails, winch/strap rear Ɵe-downs, jack, matching spare & rim with Ɵre with mount, greaseable bearing hubs.

Step Fenders: Heavy-duty fenders with side steps (min. 12 inches in length) on the front and rear of the fender to assist geƫng in and out of boat while on trailer.

Suspension: Leaf spring system.

Hitch: A 2” ball is preferred size.

Standards: Meets all DOT federal safety regulaƟons.

Mandatory In-Process and Upon Delivery InspecƟon: See SecƟon 6.3.8, Hold Point 8: CerƟfied Weight & Trailer Tongue VerificaƟon (Pre-Shipment) and 6.4.7 Delivery InspecƟon 7: Trailer System VerificaƟon: Hitch to vehicle, verify lights, brakes, and hull fit.

3. Miscellaneous & General Requirements

1) Bill of sale and Ɵtle must be furnished upon receipt of vessel.

2) One (1) complete set of operaƟon and maintenance manuals and perƟnent literature furnished.

3) Vendor must be authorized by the manufacturer to sell the brand they quote.

4) Boat will meet all U.S. Coast Guard requirements, NMMA cerƟficaƟon standards, and marked with appropriate signage.

4. Vendor Value Engineering & AlternaƟve Proposals

The specificaƟons detailed herein represent the Government’s ideal baseline design for extreme shallow-water durability. All specified minimum aluminum material thicknesses are absolute, non-negoƟable requirements. However, Bidders are highly encouraged to submit proposals uƟlizing their own proven, value-engineered fabricaƟon methods (e.g., alternaƟve structural grids or 5052-H32 in lieu of 5086-H116). Proposed alternaƟves must explain how they provide funcƟonally equivalent structural rigidity. (See SecƟon 6.2.7 for how accepted alternaƟves modify QASP parameters).

5. Delivery, Payment & Award Criteria

OpƟon: Bidders are requested to submit a separate line-item charge for delivery to: U.S. Army Corps of Engineers Maintenance Facility, Fort Randall Project, 113 Randall Creek Road, Pickstown, SD 57367.

Payment: Payment will be within 30 days following delivery and acceptance by the Government and receipt of a proper invoice.

Delivery Date: Delivery of the boat and trailer shall be no later than April 30th of 2027.

Award Criteria (“Best Value”): Contract award will be made to the responsible Offeror whose proposal represents the best overall value to the Government. Proposals will be evaluated based on the following factors, Factors 1,2, and 3 are of equal importance:

Priority EvaluaƟon Criterion & DescripƟon

1 Design and ConstrucƟon (Structural integrity, tunnel design, and material specificaƟons) and any proposed value-added features exceeding the baseline specificaƟon)

Priority EvaluaƟon Criterion & DescripƟon

2 Warranty (Minimum 12-month complete coverage with local/on-site service opƟons, and ability to meet or beat the April 30, 2027, deadline)

3 Past Performance (Demonstrated experience with successful fabricaƟon of heavy-gauge aluminum vessels (20-30 Ō) featuring integrated tunnel/jack plate builds under rigorous tesƟng protocols.

4 Price (Overall cost-effecƟveness and fair/reasonable pricing)

6. Quality Assurance Surveillance Plan (QASP) & Pre-Acceptance TesƟng

6.1 General Acceptance & Government-Contractor RelaƟonship

The objecƟve of this QASP is to foster conƟnuous communicaƟon and collaboraƟon between the Government and the Builder. Final acceptance of the vessel and subsequent payment by the Government are strictly conƟngent upon the successful compleƟon of all Quality Assurance Surveillance Plan (QASP) Hold Points during construcƟon, as well as a mandatory Pre- Acceptance Delivery InspecƟon and Float Test. The Government recognizes that boat building is a dynamic process; therefore, this QASP uƟlizes Acceptable Quality Levels (AQLs) and formal variance procedures to allow flexibility, ensure efficiency, and promote a partnership approach where hydrodynamic and mission safety are not compromised. The vessel shall be delivered in “turn-key condiƟon,” fully rigged, with the specified heavy-cup propeller installed, and ready for immediate operaƟonal deployment.

6.2 Project Management & QASP AdministraƟon

6.2.1 Welder CerƟficaƟon & Personnel QualificaƟons: The Builder shall be responsible for ensuring that all personnel performing primary structural welds on the vessel hull, transom, stringer system, and other load-bearing components are cerƟfied in accordance with the American Welding Society (AWS) D1.2/D1.2M: Structural Welding Code – Aluminum. Prior to the commencement of any hull fabricaƟon, the Builder shall submit to the COR a “Welder CerƟficaƟon Package.” This package must contain copies of the acƟve and valid welding cerƟficaƟons for each welder assigned to perform structural welding. The Government reserves the right to reject any proposed personnel who do not hold a current, relevant cerƟficaƟon. The Builder is responsible for maintaining these records.

6.2.2 Project Manager DesignaƟon & ReporƟng: Within five (5) days of contract award, the Builder shall designate a primary Project Manager. The Builder must provide a bi-weekly wriƩen progress report to the COR, including current Ɵmestamped photographs of construcƟon.

6.2.3 Timely Provision of QASP DocumentaƟon (Milestone Reviews): The Builder shall submit required QASP documentaƟon to the COR a minimum of five (5) business days prior to the scheduled date of concealment or progression. ExcepƟon: For Ɵme-sensiƟve, criƟcal-path inspecƟons (such as Hold Point 1 or Hold Point 3), the Builder may request an expedited 48-hour review, provided the COR was given a courtesy noƟficaƟon at least 5 business days in advance of the submiƩal’s arrival. To miƟgate risk, the Government encourages virtual or in-person “Joint QASP Baseline MeeƟngs” and “In-Process Reviews” prior to criƟcal hold points.

6.2.4 Variance & Equivalency Request Process: The Government acknowledges potenƟal supply chain shortages or manufacturing constraints. The Builder may submit an “Equivalency Request” or “Variance Request” to the COR for alternaƟve components or alternaƟve construcƟon sequences if supply chain delays occur. The COR will review and respond promptly.

6.2.5 Discrepancy NoƟficaƟon and Cure Plan: If a Hold Point or InspecƟon uncovers a discrepancy, it shall not result in immediate default. Instead, the Builder and COR will collaboraƟvely establish a mutually agreed-upon “Cure Plan” and Ɵmeline for correcƟon.

6.2.6 Consequences of Unauthorized Progression: Under no circumstances shall the Builder proceed past a designated Hold Point without explicit, wriƩen authorizaƟon or an approved Variance Request. If the Builder proceeds and conceals work subject to a Hold Point without approval, they shall be considered in breach and required to remove obstrucƟng materials to allow physical inspecƟon at their expense.

6.2.7 QASP ModificaƟons for Accepted Design AlternaƟves (Living Document Clause): The Government acknowledges that the Builder may idenƟfy opportuniƟes for improved efficiency, performance, or value. If the Builder submits, and the ContracƟng Officer (KO) formally approves, a design alternaƟve, material subsƟtuƟon, or Value Engineering Change Proposal (VECP) that alters the vessel’s baseline specificaƟons, this QASP shall be treated as a living document. Upon approval, the COR and Builder shall mutually review and revise the affected QASP metrics to accurately reflect the new design before tesƟng begins.

6.3 Phase I: In-Process VerificaƟon (Vendor Provided During ConstrucƟon)

The Builder must capture and submit the following documentaƟon packages to the COR for wriƩen approval at designated “Hold Points.”

Hold Point

Focus Area Required SubmiƩal Package

AQL / Flexibility & CriƟcal Tolerances

1 Stringer Geometry & Tunnel IntegraƟon

Stringer Geometry VerificaƟon Package

CRITICAL: Stringer and tunnel taper geometry must be maintained within 1.5% of the approved 3D CAD design.

Variances up to 5% are strictly prohibited due to severe hydrodynamic safety and speed degradaƟon risks.

2 Internal Structure & Transom Support

Internal Structure Photo Package

Minor weld aestheƟc variances acceptable if structurally sound.

3 IniƟal Tunnel Finish VerificaƟon

IniƟal Flushness VerificaƟon Video

0.010″ gauge test target; isolated gaps up to 0.015″ acceptable upon review.

4 Sub-Deck Systems (Fuel & FlotaƟon)

Sub-Deck Systems Package

CRITICAL Weight & Center of Gravity (CG) Balance Sheet: The Builder shall submit a calculated Weight & Center of Gravity (CG) model showing the predicted Longitudinal Center of Gravity (LCG) with the specified engine, full fuel, and passenger load. The COR must review and approve this placement to ensure the vessel will not be “stern-heavy” before the sub-deck is permanently sealed and the engine is rigged.

Standard ABYC compliance required for fuel/flotaƟon.

Hold Point

Focus Area Required SubmiƩal Package

AQL / Flexibility & CriƟcal Tolerances

5 Electrical Material & Factory Load Test

Cable, TerminaƟon & Pre-Shipment Voltage Report

Voltage drop target < 3%. AQL up to 4% with COR engineering review.

6 Surface Prep (Paint & Non- Skid)

Surface Prep Log Visible welds in non-cosmeƟc areas are completely acceptable.

7 Builder Pre- Delivery Sea Trials

Pre-Delivery Sea Trial Log

Independent pre-delivery sea trial uƟlizing the exact parameters in SecƟon 6.4.8. Builder shall document results and submit video evidence to the COR.

8 CerƟfied Weight & Trailer Tongue VerificaƟon

CerƟfied Scale Ticket Prior to shipment, the Builder must provide a cerƟfied scale Ɵcket showing: Total Weight and Tongue Weight (must be 10%-15% of total combined weight on hitch ball).

6.3.1 Hold Point 1: Stringer Geometry & Tunnel IntegraƟon: Required SubmiƩal: “Stringer Geometry VerificaƟon Package”. Overhead photos at 12-inch intervals with a centerline string and ruler to mathemaƟcally prove the taper of the flanking stringers. Macro photography proving conƟnuous direct-contact welding between stringer and tunnel wall. ConƟnuous HD video walkthrough. CRITICAL: Geometry must be maintained within 1.5%.

6.3.2 Hold Point 2: Internal Structure & Transom Support VerificaƟon: Required SubmiƩal:

“Internal Structure Photo Package” (Prior to decking). Photos showing Transom Knee Brace landings, Transverse Rib Grid, FlotaƟon Pod internal structure, and Structural Weldments.

6.3.3 Hold Point 3: IniƟal Tunnel Finish VerificaƟon: Required SubmiƩal: “IniƟal Flushness VerificaƟon Video” (Prior to etching/priming). Unedited HD video showing “Feeler Gauge Test” (0.010″) at three locaƟons along the tunnel. (AQL: isolated 0.015″ acceptable).

6.3.4 Hold Point 4: Sub-Deck Systems (Fuel & FlotaƟon) & CG VerificaƟon: Required SubmiƩal:

“Sub-Deck Systems Package”. Photographic evidence of flotaƟon foam distribuƟon and ABYC/USCG fuel system pressure test proof. AddiƟonally, Builder must submit the Weight & Center of Gravity (CG) Balance Sheet for COR approval of engine/fuel placement prior to sealing the deck.

6.3.5 Hold Point 5: Electrical Material, TerminaƟon & Factory Load Test: Required SubmiƩal:

“Cable, TerminaƟon & Pre-Shipment Voltage Report”. Photos of baƩery wire/lugs. Live cranking voltage test video showing drop < 3% (AQL: 4%).

6.3.6 Hold Point 6: Surface Prep (Paint & Non-Skid): Required SubmiƩal: “Surface Prep Log”.

DocumentaƟon demonstraƟng proper etching and primer applicaƟon.

6.3.7 Hold Point 7: Builder Pre-Delivery Sea Trials (Mandatory Proof of Performance): Prior to shipping, the Builder shall conduct an independent pre-delivery sea trial uƟlizing the exact parameters in SecƟon 6.4.8. Builder shall document results in a Pre-Delivery Sea Trial Log and submit video evidence to the COR. Government shipment authorizaƟon is strictly conƟngent upon wriƩen approval of this log.

6.3.8 Hold Point 8: CerƟfied Weight & Trailer Tongue VerificaƟon (Pre-Shipment): Prior to shipment, the Builder must provide a cerƟfied scale Ɵcket to the COR showing: (1) Total Weight:

Combined boat, motor, trailer, and accessories (must not exceed trailer’s 5,500 lbs capacity). (2) Tongue Weight: Must physically measure between 10% and 15% of the total combined weight on the hitch ball to guarantee safe highway towing. AcƟon: If tongue weight is outside this 10%- 15% window, the Builder must adjust the winch stand and trailer axle posiƟons at their facility prior to receiving shipment authorizaƟon.

6.4 Phase II: Pre-Acceptance VerificaƟon (Government Evaluated Upon Delivery)

The following physical inspecƟons and tests will be performed upon delivery. Successful compleƟon is required for final acceptance and payment.

6.4.1 Delivery InspecƟon 1: Tunnel Channel Finish (The Feeler Gauge Test): Government inspector physically checks water-contacƟng surfaces using a 24-inch metal straightedge (0.010″ target, AQL 0.015″).

6.4.2 Delivery InspecƟon 2: Electrical System Voltage Drop: Government measures voltage drop during peak cranking load (Target < 3%, AQL 4%).

6.4.3 Delivery InspecƟon 3: Dimensional & Layout Conformance: Tape measure verificaƟon of criƟcal dimensions.

6.4.4 Delivery InspecƟon 4: WaterƟght Integrity Test (Storage): Gasketed hatches closed;

medium-pressure water hose spray for 60 seconds.

6.4.5 Delivery InspecƟon 5: Final Fit & Finish Review: Punch list review and documentaƟon handover (manuals, warranty, registraƟon).

6.4.6 Delivery InspecƟon 6: Jack Plate Performance VerificaƟon: Verified equivalent characterisƟcs per SecƟon 2.2. Performance Test: Full verƟcal range travel Ɵme target is under

8.0 seconds. AQL: Up to 8.5 seconds acceptable pending COR review.

6.4.7 Delivery InspecƟon 7: Trailer System VerificaƟon: Hitch to vehicle, verify lights, brakes, and hull fit.

6.4.8 Delivery InspecƟon 8: Mandatory Performance Sea Trial & Systems Tests: Conducted jointly under Full Mission Load.

Hull WaterƟght Integrity & Pump Test: Bilges checked aŌer 30 min; pumps/scuppers tested.

Systems IntegraƟon: NMEA 2000 network verified.

Shallow-Water Takeoff: Jack plate raised 3.5″–5.0″. Full throƩle from stop. Target Ɵme-to-plane < 5.0 seconds (AQL: 6.0 seconds). Zero venƟlaƟon.

High-Speed TacƟcal Turn: Jack plate at 0 inches. 25–30 knots, execute aggressive 180-degree turn. Propeller maintains grip (AQL: minor correctable venƟlaƟon).

Maximum ElevaƟon Cruise: Jack plate raised to maximum height (6.0 inches acƟve hydraulic liŌ / 7.5 inches total system rise). Maintain straight-line cruise for 2 minutes. Vessel maintains plane with stable water pressure.

6.5 Discrepancy ResoluƟon & Failure to Meet Criteria

If the vessel fails to meet Phase I or Phase II targets, the Government and Builder will enact a Cure Plan. The Builder is responsible for costs associated with reasonable rework, re-tuning, or structural rework to correct deficiencies. The Government guarantees the right to cure prior to any refusal of acceptance. The vessel will not be accepted unƟl all finalized QASP criteria are successfully passed.

7. Warranty Submission & EvaluaƟon Requirements

7.1 Pre-Award Proposal Submission Requirement

The Offeror shall submit their complete, legally binding, standard commercial warranty document in its enƟrety. A markeƟng summary or brochure is strictly unacceptable. Failure to include actual warranty terms may render the offeror non-responsive.

7.2 Pre-Award Warranty EvaluaƟon

The Government will evaluate the warranty prior to vendor selecƟon to ensure it contains no terms that conflict with or limit operaƟonal requirements. If the commercial warranty contains conflicƟng clauses, the Offeror must submit a formal addendum/waiver explicitly overriding those exclusions.

7.3 Minimum Acceptable Warranty Coverage (EvaluaƟon Criteria)

Government/Commercial Use: Explicit statement that coverage is fully valid for ‘commercial,’ ‘governmental,’ or ‘public service’ use without diminishing terms.

Coverage Term: Coverage for the enƟre vessel (hull, structure, components) for a period of no less than twelve (12) months from final delivery and acceptance.

Claims & Repair LocaƟon: Warranty service must be allowed either on-site at the Government’s facility (Fort Randall Project) or by a local authorized service center. Shipping to the factory at Government expense is unacceptable.

Parts and Labor: Warranty shall cover 100% of costs for both parts and labor at standard regional shop rates.

Component Pass-Throughs: Clearly delineate builder’s warranty versus pass-through warranƟes (engine, jack plate, electronics), ensuring no gaps in coverage.