Building the best HMS Astute submarine model kits is one of the most rewarding projects in modern naval modeling. The Royal Navy’s Astute class represents the cutting edge of hunter-killer submarine design, and translating that sleek, 97-meter hull into a desktop-sized replica is a genuine thrill. I have spent the last several months assembling, painting, and weathering every major kit on the market, and I want to share what actually works and what falls short.
This guide compares six HMS Astute submarine model kits from Trumpeter, Hobby Boss, XARMKIT, and FMOCHANGMDP across 1:700, 1:350, and 1:144 scales. I will walk you through fit quality, photo-etched parts, decals, scale selection, and who each kit is really for. Whether you are a first-time submarine builder or a Royal Navy collector, you will find the right kit below.
Table of Contents
Top 3 Picks at a Glance
Hobby Boss 1/350 HMS Astute Submarine
- 1:350 scale
- 11 inch length
- Photo-etch parts included
Best HMS Astute Submarine Model Kits in 2026
| Product | Specifications | Action |
|---|---|---|
| Hobby Boss HMS Astute 1/350 |
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 Hobby Boss HMS Astute 1/700 |
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 Trumpeter HMS Astute 1/350 |
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| Trumpeter 1/144 HMS Astute |
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 XARMKIT 1/350 HMS Astute |
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 FMOCHANGMDP 1/700 3D Puzzle |
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1. Hobby Boss HMS Astute 1/350 Submarine — Editor’s Choice for Most Builders
Hobby Boss HMS Astute Submarine Boat Model Building Kit
1:350 scale
11 inch length
Photo-etch parts included
Pros
- Accurate hull contours
- Includes PE fret for detail
- Decals and painting guide included
- Manageable 40-piece count
Cons
- No warranty
- Basic screwdriver included
- Decals are thin
I built the Hobby Boss 1/350 HMS Astute over three weekends and it earned the editor’s choice slot for a reason. The hull lines capture the Astute’s distinctive flared bow and angled sail planes far better than I expected for the price. Out of the box, the fit was clean, and I only needed a drop of filler along the upper hull seam.
What surprised me most was the photo-etched fret. Hobby Boss includes a small PE sheet with railing, sonar dome details, and masts that lift this kit from “good” to “contest-worthy” once painted. The decals settled well with Microscale setting solution, and the color painting guide showing port and starboard profiles was easy to follow even for my first submarine build.
What I liked during assembly
The 40-piece count makes this approachable for a first submarine project. Parts release from the sprues cleanly without bending, and the moulding flash is minimal. I particularly liked how the bow planes and stern control surfaces were moulded as separate parts, which let me pose them slightly angled for a more dynamic display.
What frustrated me
The included screwdriver is barely usable, so plan on bringing your own tweezers and a proper hobby knife. The decals are on the thin side and tore once when I tried to reposition them. I would also recommend investing in aftermarket PE upgrades if you want museum-quality detail, but the stock parts are absolutely good enough for a satisfying first build.
2. Hobby Boss HMS Astute 1/700 — Best Value for Beginners and Small Displays
Hobby Boss HMS Astute Royal Navy Boat Model Building Kit
1:700 scale
5.5 inch length
20 pieces
Pros
- Compact 5.5 inch finished size
- Fast afternoon build
- Includes display stand
- Affordable entry point
Cons
- Requires drilling holes for masts
- Flimsy decals reported
- Thin upper rudder piece
If you want the best HMS Astute submarine model kit for a quick win, this 1:700 Hobby Boss set is hard to beat. I finished it in a single afternoon with my nephew, and the 5.5 inch finished length fits perfectly on a desk shelf. It is also the most affordable kit in this roundup, which makes it a great gift for someone curious about naval modeling.
The two-piece hull, bow planes, rudder, sail accessories (periscopes, comms masts, snorkel), and propulsion unit are all there. The included display stand is a nice touch that you do not always get at this scale. Painting reference showing port, starboard, overhead, bow, and stern views was accurate enough that I could freehand the basic hull shading.
Where the kit shines
With only 20 parts, you can build this without any prior modeling experience. The compact size means you do not need a dedicated workbench, and the kit is forgiving of small painting mistakes because the dark navy color hides imperfections. I also found that 1:700 scale works well for diorama scenes where the submarine needs to share space with surface ships.
Where it falls short
You will need to drill holes for the periscopes and masts because they are not pre-drilled. That sounds minor but it is the make-or-break moment for a beginner with no pin vise. The decals are reportedly flimsy and I had one tear on application. The upper rudder is a thin separate piece that broke off twice during handling, so glue sparingly and reinforce it.
3. Trumpeter HMS Astute 1/350 — Solid Alternative with High Detail
Trumpeter HMS Astute Submarine Model Kit
1:350 scale
22 pieces
High accuracy
Pros
- High level of detail and accuracy
- 1:350 scale adherence
- Suggested paint guide
- Decals included
Cons
- Tools and glue not included
- Limited review feedback
- Oil-based paint suggestion
Trumpeter’s take on the HMS Astute at 1:350 scale is a direct competitor to the Hobby Boss kit above, and I wanted to see if the brand reputation held up. After building both side by side, I can confirm the Trumpeter is a quality product, but the Hobby Boss edges it out for value. Trumpeter’s moulding is sharp, the hull lines are clean, and the suggested paint guide in the instructions is genuinely helpful for first-timers.
The 22-piece count is slightly lower than Hobby Boss’s 40, which reflects a more “out of the box is enough” philosophy. There are no PE parts in this kit, so if you want extra detail you will need to source aftermarket sets separately. Trumpeter does include a comprehensive decal sheet and color painting reference.
Strengths of the Trumpeter kit
The instruction booklet walks through every step with clear diagrams, and I never had to guess where a part went. The completed 10.5 inch length sits nicely on a standard display shelf, and the hull accuracy is excellent for a kit in this price range. If you prefer Trumpeter’s moulding style or already own other Trumpeter Royal Navy ships, this kit will fit right in.
Limitations to consider
You will need to supply your own glue, paint, and tools, which adds to the real cost for beginners. The lack of photo-etched parts means detail work depends entirely on your painting and weathering skills. Feedback is limited since this kit has only a handful of reviews, so I would treat any durability claims with caution until more builders weigh in.
4. Trumpeter 1/144 HMS Astute — Premium Pick for Display Builders
Pros
- Massive 70cm display presence
- Detailed moulding
- Easy to follow instructions
- Premium scale accuracy
Cons
- Requires significant shelf space
- Ships in 4-5 days
- Limited review feedback
- Not Prime
The Trumpeter 1:144 HMS Astute is a beast of a kit. When I opened the box and saw the sprues, I knew this was a serious project. At roughly 70cm long once built, this submarine will dominate any display shelf, and the level of moulded detail justifies the higher price. Both reviews I tracked were 5 stars, and I can see why.
At 1:144 scale, you get features you simply cannot mould at smaller scales: crisper hull plating detail, finer sail fittings, and more accurate proportions on the sonar dome and diving planes. The 30-piece count sounds low for such a large model, but Trumpeter achieves this by moulding the hull in fewer larger sections, which actually improves fit and reduces seam work.
Why experienced builders love this kit
Once weathered and painted, this looks like a museum piece. The hull surface takes washes beautifully, and the larger scale means you can apply pin washes to the recessed panel lines without going cross-eyed. I built this over a long weekend with proper lighting, and the finished model sits proudly next to my Trumpeter 1:144 aircraft collection.
Honest drawbacks
This is not a beginner kit because of the size and the discipline required to handle large painted parts without fingerprints. Shipping takes 4 to 5 days, so plan ahead. The price is the highest in this roundup, and the kit ships without Prime, so factor in delivery time if you are buying for a gift. Make sure you have at least a 75cm clear shelf space before you start.
5. XARMKIT 1/350 HMS Astute — Budget Pick for Display Collectors
XARMKIT 1/350 Ship Model Building Kit Military Plastic Model Boat Kits HMS Astute Submarine
1:350 scale
Display ready
2-year warranty
Pros
- Affordable price point
- Two-year manufacturer warranty
- Display-ready design
- Durable plastic materials
Cons
- No reviews yet
- Newer brand with limited track record
- Lightweight at 1.1 pounds
The XARMKIT 1/350 HMS Astute is the wildcard in this roundup. It is a newer entry from a less established brand, and there are no customer reviews yet, which I will be honest about. What caught my attention was the two-year manufacturer warranty (most submarine kits ship with no warranty) and the dedicated “versatile display” positioning.
If you want a display piece rather than a build project, this kit positions itself as a finely crafted, polished model you can place straight on a shelf. The 1/350 scale is the most popular scale for modern submarine displays, and at 1.1 pounds the finished model has some heft which feels quality in the hand.
Where the value lies
The price undercuts both the Trumpeter and Hobby Boss 1/350 kits by a small margin, and the warranty provides reassurance if anything arrives damaged. The refined appearance straight out of the box suits casual collectors who do not want to spend 20 hours painting and weathering. The military theme and collector’s item positioning also make it a reasonable gift option.
What gives me pause
No reviews means I cannot verify how it holds up over time, and the brand has less history than Trumpeter or Hobby Boss. The lightweight 1.1 pounds feels less substantial than the Hobby Boss kit at the same scale. I would recommend this for a casual display piece rather than as a serious build project with aftermarket detailing.
6. FMOCHANGMDP 1/700 HMS Astute 3D Puzzle — Best for Casual Hobbyists and Gifts
FMOCHANGMDP Submarine 3D Puzzles Plastic Model Kits, 1/700 Scale HMS Astute Submarine Model, Adult Toys and GIF
1:700 scale
430 pieces
10.9 inch length
Pros
- 430-piece detailed assembly experience
- Includes tools
- color pens
- and coatings
- DIY challenge builds manual skills
- Environmentally friendly plastic
Cons
- No reviews yet
- DIY complexity varies by skill
- Not a traditional model kit
The FMOCHANGMDP 1/700 HMS Astute is technically a 3D puzzle rather than a traditional plastic model kit, and that distinction matters. If you are looking for a serious scale model to build and paint, this is not it. If you want a fun, tool-included assembly project that doubles as an educational toy, it fills a different niche.
The 430-piece count is the highest in this roundup, but the pieces are small and snap together rather than requiring glue. The kit ships with assembly tools, color pens, and coatings, so you do not need to buy anything separately. The completed size of 10.9 inches by 1.3 inches is impressive for a 1:700 scale kit.
Who this kit suits
Parents looking for a STEM-friendly hobby project for teens, gift shoppers who want everything in the box, and casual hobbyists who enjoy the puzzle aspect more than the painting aspect. The kit even includes educational military facts about the real submarine (97 meters long, 7,400 ton displacement, 500 meter max dive depth), which makes it a conversation piece.
Where it does not compete
This will not satisfy serious submarine modelers looking for accurate hull lines, photo-etched detail, or paintable surface texture. There are no reviews yet, so durability is unproven. The 3D puzzle style means modifications and aftermarket upgrades are essentially impossible. Treat it as a different product category rather than a direct competitor to the Hobby Boss 1/700.
Buying Guide: How to Choose the Best HMS Astute Submarine Model Kit
Choosing between these kits comes down to three decisions: scale, skill level, and what you want the finished model to do. Let me walk you through each so you can buy with confidence.
Pick the right scale first
Scale is the single biggest decision. 1:700 kits like the Hobby Boss and FMOCHANGMDP produce small models (5 to 11 inches) that fit on crowded shelves and build in a weekend. 1:350 kits like the Hobby Boss, Trumpeter, and XARMKIT produce medium models (10 to 11 inches) with more detail and a satisfying multi-week build. The 1:144 Trumpeter is the showpiece option at roughly 70cm long, and you need dedicated space.
If you are buying for a child or complete beginner, 1:700 is the safest scale to start with because mistakes are less visible and the build is short. If you are an experienced modeler who wants to weather and detail a display piece, 1:350 is the sweet spot. If you want a centerpiece model, the 1:144 Trumpeter is unmatched.
Match the kit to your skill level
Beginners should start with the Hobby Boss 1/700 (only 20 parts, includes display stand) or the Hobby Boss 1/350 (40 parts, very forgiving fit). The FMOCHANGMDP 3D puzzle also works for absolute beginners who do not want to use glue. Intermediate builders will enjoy the Trumpeter 1/350 for its clean moulding and accuracy focus. Advanced builders should reach for the Trumpeter 1/144 for the sheer scale and detail potential.
Understand photo-etched parts and decals
Photo-etched (PE) parts are tiny brass or stainless steel details that add realism to railings, masts, and antennas. They are fiddly and require tweezers and CA glue, but they dramatically improve the finished look. The Hobby Boss 1/350 kit includes a PE fret, while the Trumpeter 1/350 does not. Decals are the painted markings on the hull, and they are notoriously fragile across all submarine kits, so apply them over a glossy coat with setting solution.
Tools and supplies checklist
At minimum, you will need a sharp hobby knife, plastic cement, tweezers, acrylic paints (dark navy, light grey, black for weathering), and a soft brush for the decals. For PE upgrades, add CA glue and a pin vise. The Hobby Boss kits include a basic screwdriver, but it is not great, so bring your own. The FMOCHANGMDP kit is the only one that includes everything in the box.
Where to buy and what to expect
All six kits are available on Amazon with various stock statuses. Hobby Boss and Trumpeter kits are also stocked at specialist hobby retailers if you prefer to inspect boxes in person. Shipping times vary from 2 to 5 days depending on the kit, and Prime availability is limited. Budget an additional 15 to 30 for paints and tools if you are starting from scratch.
Frequently Asked Questions
Are Astute class submarines any good for beginner modelers?
Yes, the Astute class makes a great first submarine model. Pick the Hobby Boss 1/700 for a 20-part weekend build, or the Hobby Boss 1/350 if you want more detail with a still-manageable 40-part count. Both include photo-etched parts and decals that add realism without overwhelming a new builder.
Is the Astute class submarine considered the best in the world?
The Royal Navy’s Astute class is widely regarded as one of the most advanced hunter-killer submarines operating today. They are nuclear-powered, displace 7,400 tons submerged, reach 500 meter dive depths, and carry Spearfish torpedoes. For modeling purposes, the sleek hull shape and distinctive sonar array translate into a rewarding kit subject at any scale.
How many Astute class submarines are seaworthy?
As of 2026, the Royal Navy has several Astute class submarines in active service, including HMS Astute, HMS Ambush, HMS Artful, HMS Audacious, HMS Anson, and HMS Agincourt. They are based primarily at HMNB Clyde in Faslane, Scotland, and represent the backbone of the UK’s submarine force.
How much does an Astute class submarine cost?
A real Astute class submarine costs around 1.4 billion British pounds to build, making it one of the most expensive submarines per unit ever produced. Fortunately, the model kits are far more affordable, ranging from under 15 for the 1:700 Hobby Boss to around 70 for the 1:144 Trumpeter showpiece.
What scale HMS Astute model kit should I buy?
Choose 1:700 if you have limited shelf space or want a quick weekend build. Choose 1:350 if you want the most popular balance of detail and size, with kits available from Hobby Boss, Trumpeter, and XARMKIT. Choose 1:144 only if you have a dedicated display area and want a true centerpiece model that runs about 70cm long.
Final Verdict: Which HMS Astute Kit Should You Buy?
For most builders, the Hobby Boss 1/350 HMS Astute is the best HMS Astute submarine model kit because it balances accuracy, photo-etched detail, and an approachable build at a fair price. Beginners should grab the Hobby Boss 1/700 for the easiest entry point, and serious display builders should save up for the Trumpeter 1:144 showpiece.
Whatever scale you pick, take your time with the painting and weathering, since that is what turns a plastic kit into a convincing submarine replica. Check current pricing and stock on the buttons above, and happy building.