Bow of a Sea Raider plate aluminium boat in the workshop

Sea Raider Boat Features

Every Sea Raider is cut from 5083 marine-grade plate, welded over an internal frame, foam filled and finished at Cleveland Marina. This is what goes into the hull, what comes standard, and what you can specify.

01 — Material

Only the best aluminium plate

Every hull in the range is 5083 marine-grade aluminium plate. Not pressed sheet, not a lesser alloy — 5083 is the alloy specified for marine structures because it holds its strength after welding and resists saltwater corrosion without coating.

Robotic arm welding an aluminium boat hull on a production line
Robot-assisted welding gives a repeatable, consistent weld along the chine and keel.

Plate does not dent like pressed sheet

A pressed tinnie is folded from thin sheet, so it oil-cans and dents when it takes a knock at the ramp or over a bar. Plate is cut thick and welded, so the hull holds its shape. It is also repairable anywhere — aluminium can be cut out and re-welded, which is not true of composite.

Thickness is not the same across the range

Bigger hulls carry more plate. These are the actual thicknesses, model by model — bottom, topsides and transom.

ModelBottomTopsidesTransom
6.25m — Pro Fisher, Centre Console, BowRider, SportsCab6 mm4 mm5 mm
6.85m — Pro Fisher, Walk Around, Centre Console6 mm5 mm6 mm
7.5m — Pro Fisher, SportsCab, Centre Console6 mm5 mm6 mm
Boss 770 & Boss 8806 mm5 mm6 mm
Shark Cat — 7.9m, 8.8m, 10m6 mm5 mm6 mm
9.6m Pro Fisher6 mm5 mm8 mm

The 9.6m carries an 8mm transom because it is rated to 600hp. The transom is the hardest-working panel on any outboard boat — it takes the entire thrust of the engine.

02 — Construction

What’s under the floor

The plate is the skin. The strength comes from the frame it is welded to, and that is where a Sea Raider differs most from a pressed hull.

Marine Core subframe

An internal subframe of longitudinal and latitudinal ribs — a milk-crate structure that reinforces the hull and holds its shape under load. Vertical stringers are 6mm, horizontal ribs 5mm, and the whole thing is closed with a fully welded plate floor. A box-section floor frame adds further support under the self-draining deck.

The chine and keel are not simply welded. Using extrusion designed for marine work, each join is reinforced with a total of four welds.

Inter-Lok core

The Inter-Lok core is the next step in that structure, optimised for offshore work: two full-height stringers, eight full-length one-piece stringers, and interlocking gibs tying them together. One-piece stringers matter — there is no join along the length of the boat to work loose in a chop.

Hull stringers with foam fill packed between them before the plate floor is welded on
Stringers and foam fill, before the plate floor goes on.
Diagram of a double chine hull cross-section showing spray deflected outward and down
The double chine steps the hull through three surfaces — bottom and two angled sides.

Double chine hull

A double chine hull carries two distinct angles along its cross-section, stepping the shape through three flat surfaces: the bottom and two angled sides. The chines throw spray outward and down rather than up into the boat, add lift as the hull comes onto the plane, and give the boat something to lean on in a turn.

The practical result is a drier ride, less roll at rest, and more predictable handling when waves are coming from more than one direction — which is most of the time on a bar or in a wind-against-tide chop.

03 — Performance

Ride and stability

Strength is only half of it. A hull also has to sit still when you are rigging, and stay settled when it gets rough offshore. Two things drive that: beam, and what you fit to control trim.

Narrowest beam
2.20 m
6.25m range
Boss wide beam
2.65 m
Boss 770 & 880
Widest monohull
3.00 m
9.6m Pro Fisher
Widest cat
3.50 m
10m Shark Cat
Crew fishing from the cockpit of a Sea Raider on a calm day
Beam is what you feel at rest — the boat moves less underfoot with crew aboard.

Foam filled and water-tight

Every hull is foam filled and sealed water-tight for positive buoyancy. If the worst happens, the boat floats. It also deadens hull noise and stiffens the structure.

Three levels of trim control

Trim gear is how you flatten the ride in a chop and get the boat onto the plane faster with weight aboard. There are three steps, and they are worth understanding before you order:

Lenco trim tabs — manual correction for list and bow attitude. The standard answer, and the one most owners fit.
Zipwake KB300-S — dynamic trim control that adjusts automatically as conditions and speed change.
Seakeeper Ride 450 — underway stabilisation that eliminates up to 70% of roll. The step up for anyone running long distances or carrying passengers who do not love a chop.

04 — Safety

Auto-drain deck

All Sea Raider boats are built standard with an auto-drain deck and a fully sealed, no-return scupper system.

The auto-drain deck expels water from the hull quickly and efficiently. A rear gutter guides water to a lower chamber ready to be pumped out, and the no-return scuppers stop it coming back in through the same path.

This sits separate to the underfloor bilge pump, so the boat has two independent ways of getting water out. Green water over the transom drains itself while you keep fishing — you are not relying on a single pump and a single float switch.

It is also why the deck is a comfortable place to work. Wash the boat down, gut a fish, bring a wet anchor aboard — the water goes where it is meant to.

Cockpit of a Sea Raider looking aft, with EVA teak decking and moulded side storage
A finished cockpit — flat, self-draining and set up to be worked on.
05 — Included

What comes standard

Fitted to the boat at no extra cost. This is the list for the 6.25m and 7.5m Pro Fisher — inclusions vary a little by model and layout, so check the individual boat page for the exact list.

  • Fuel tank — 170 L to 1,000 L by model
  • 45 L live bait tank with rod holders
  • Self-draining deck
  • Bilge pump
  • Water-tight hull
  • Foam-filled hull
  • Cutting board
  • Alloy fairlead and roller
  • Cleats
  • Anchor well
  • Battery switch
  • Rear fold-down seats × 2
  • Boarding ladder
  • Gunwale anti-slip pad
  • Side storage trays
  • Gunwale rod holders
  • Rocket launchers on hardtop
  • Bow and stern handrails
  • Hardtop handrails
  • Rear cabin handrails
  • Navigation and mast lights
  • Transducer mount bracket
  • Two-tone paint
  • Marine driver seat
  • Navigator seat
  • LED cabin light
  • Sliding window
  • Electric wiper
  • Switch control panel
  • Cushions
  • Offshore hatch
  • Under-floor storage tank

Not included in the base price: battery, cabin door and folding table. We list those openly so there are no surprises — several can be specified at order time.

06 — Options

What you can specify

Prices shown are from the 6.25m configurator and give you a realistic idea of cost. Larger models are quoted with your build. Everything here is fitted and commissioned in Australia before handover.

Deck, comfort and fit-out

SeaStar Dometic hydraulic steering kit for outboard boats
Hydraulic steering
from $3,610
Muir vertical electric anchor windlass
Electric anchor winch
from $2,888
Pair of stainless steel trim tabs with actuators
Trim tabs
from $3,600
Marine deck wash and live bait tank pump
Live bait & deck wash pump
from $1,685
12 volt slide-out fridge fitted under a boat helm seat
12V fridge slide-out
quoted with build
Bait board mounted on the transom of a fishing boat
Bait board
quoted with build
Compact marine toilet for a boat cabin
Marine toilet
from $1,444
316 stainless steel canvas canopy frame for a boat
Canvas extended roof
from $2,000

Lighting and electronics

Underwater LED transom lights glowing beneath a boat at night
Underwater LED lights
from $960
LED deck and search lights mounted on a boat hardtop
LED deck & search lights
from $960
VHF marine radio unit
VHF marine radio
quoted with build
Flush mount marine compass
Marine compass
quoted with build

Full navigation packages are fitted and commissioned here: Garmin Echomap Ultra 2 chartplotters in 10″ and 12″, Simrad packages specified to the boat, radar with a hardtop mount, NMEA 2000 autopilot integration, Sionyx marine night vision, and Fusion audio from an Apollo zone stereo through to a 1500W amplifier and 12″ subwoofer.

Fishing and touring

Bow-mounted electric trolling motor on a plate aluminium boat
Trolling motor package
quoted with build
Marine safety gear pack
Safety gear pack
quoted with build
Custom vinyl marine wrap applied to a boat hull
Marine boat wrap
from $5,000
EVA teak surround fitted around a bow hatch
EVA teak bow hatch surround
from $600

Engine, trailer and power

PackageDetailFrom
Outboard — 150hpSuzuki, Mercury or Yamaha, fitted and water-tested$25,500
Outboard — 200hpSuzuki, Mercury or Yamaha, fitted and water-tested$32,000
Twin outboard transomOffshore redundancy, available on 7.5m and aboveQuoted
Galvanised trailerMatched to finished boat weight, not hull weight$9,000
Aluminium trailer6.9m and 8.2m, electric brakes available$12,000
Sounder / chartplotterHumminbird, Simrad, Lowrance or Garmin, 7″ to 10″$1,350

Trailer rating is matched to the finished boat weight — boat, motor, fuel and gear — not just the hull. We size it with your build rather than selling you a trailer that is legal empty and overloaded full.

07 — Flooring

Top tier EVA marine flooring

EVA teak decking is the single upgrade most owners say they would fit again. It is soft underfoot, grips when wet, stays cool in the sun and does not hold fish blood or salt the way bare checkerplate does.

SeaDek EVA teak decking fitted across the bow of a plate aluminium boat
EVA teak on the bow — coverage can extend to gunnels and hardtop.

Specified your way

Colour and pattern are your choice at order time, and coverage can run beyond the cockpit floor to the bow, the gunnels and the hardtop. SeaDek and equivalent EVA products are both available.

On the 6.25m the cockpit floor upgrade is $2,407, with the bow hatch surround a further $600. Larger boats are quoted with the build.

It is fitted here at Cleveland Marina, not shipped as a kit for you to lay yourself.

EVA decking sheet cut with a custom marlin design on the cutting bed
Custom artwork can be cut straight into the decking — this one is a marlin.
08 — Build & warranty

Built, fitted and backed in Australia

The hulls are manufactured overseas by a trusted long-term partner. Everything after that — trailer assembly, motor installation, electronics, full fit-out, compliance and registration — is completed by our own team at Cleveland Marina in Queensland, to Australian standards.

We say that plainly because buyers ask, and because it is the arrangement that lets us build a 7.5m plate boat for the price we do while still handing over a boat that has been rigged, water-tested and signed off locally.

Commercial survey

Any model can be built to commercial survey, including hire and drive (Class 4). It must be requested before construction starts and is quoted separately — it cannot be added to a boat already built as a recreational vessel. See the boat survey guide.

Bare aluminium boat hull inside the production facility
A bare hull in the production facility, before fit-out at Cleveland Marina.

5-year hull warranty

On every boat in the range, from the 6.25m to the 10m Shark Cat.

6-year outboard warranty

On the outboard motor supplied with your package.

Australia-wide delivery

Freight quoted per delivery. QLD packages include boat and trailer registration.

09 — Compare

Feature by model

The whole range at a glance. Every model links through to its own page for the full specification and standard inclusions.

ModelBeamPlate (b/t/tr)PowerFuelPeopleDry weight
6.25m Centre Console2.20 m6/4/5115–175 hp170 L5900 kg
6.25m Pro Fisher2.20 m6/4/5150–200 hp170 L51,000 kg
6.25m BowRider2.20 m6/4/5115–200 hp175 L——
6.25m SportsCab2.20 m6/4/5115–200 hp175 L——
6.85m Centre Console2.45 m6/5/6200–300 hp300 L61,500 kg
6.85m Walk Around2.45 m6/5/6200–300 hp300 L61,400 kg
6.85m Pro Fisher2.45 m6/5/6200–300 hp350 L61,500 kg
7.5m Centre Console2.45 m6/5/6200–350 hp345 L——
7.5m Pro Fisher2.45 m6/5/6250–350 hp350 L81,700 kg
7.5m SportsCab2.45 m6/5/6250–350 hp350 L81,700 kg
7.9m Shark Cat2.45 m6/5/6300–400 hp380 L8—
Boss 7702.65 m6/5/6300–400 hp478 L——
Boss 8802.65 m6/5/6350–400 hp478 L92,000 kg
8.8m Shark Cat2.80 m6/5/6400–500 hp480 L9—
9.6m Pro Fisher3.00 m6/5/8400–600 hp900 L103,200 kg
10m Shark Cat3.50 m6/5/6600–800 hp1,000 L12—

Plate is shown as bottom / topsides / transom in millimetres. Dimensions and weights are nominal and vary slightly with the options fitted. A dash means the figure is not yet published for that layout — call us on 07 3477 9338 and we will confirm it.

Aluminium plate hull under construction on the workshop floor
Every hull is 5083 plate.
Helm and passenger seats fitted inside a Sea Raider cabin
Layouts change; the hull does not.
Several aluminium boats in build inside the workshop
Built and rigged at Cleveland Marina.
Questions

Common questions

What aluminium do you use, and why does it matter?

5083 marine-grade aluminium plate. It retains its strength after welding and resists saltwater corrosion without needing a coating, which is why it is the alloy specified for commercial marine structures. Plate is cut and welded rather than pressed and folded, so the hull holds its shape under impact and can be repaired by cutting out and re-welding.

How thick is the plate?

It varies by model. The 6.25m range is 6mm bottom, 4mm topsides and a 5mm transom. From the 6.85m up it is 6mm bottom, 5mm topsides and a 6mm transom. The 9.6m Pro Fisher carries an 8mm transom because it is rated to 600hp.

What is the difference between plate and pressed aluminium?

Pressed hulls are folded from thin sheet, which dents and oil-cans under impact. Plate hulls are cut from thick aluminium and welded over an internal frame, giving a stiffer, quieter, more durable boat that stands up to bar crossings and ramp knocks.

Is the boat unsinkable?

Every hull is foam filled and sealed water-tight for positive buoyancy, so it floats if it is swamped. That sits alongside the auto-drain deck and a separate underfloor bilge pump — three independent layers rather than one.

Does the price include a motor and trailer?

No. Listed prices are for the boat only. Motor, trailer and electronics packages are quoted as optional extras and fitted with your build. Trailer rating is matched to the finished boat weight rather than the bare hull.

Can I choose the colour?

Yes. Two-tone paint is standard and the scheme is your choice at order time. A full marine vinyl wrap is available from $5,000, and EVA teak decking comes in your choice of colour and pattern.

Where are Sea Raider boats built?

The hulls are manufactured overseas by a trusted partner. Trailer assembly, motor installation, electronics, fit-out, compliance and registration are all completed by our team at Cleveland Marina in Queensland to Australian standards.

What warranty do I get?

A 5-year hull warranty and a 6-year warranty on the outboard motor. Third-party components such as electronics, trailers and accessories carry their own manufacturer warranties. Call 07 3477 9338 for full terms.

Build it your way

Every Sea Raider is built to order. Tell us how and where you fish, and we will spec the boat around it — or come and see one at Cleveland Marina.

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