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RC tug boats occupy their own corner of the hobby — slower, heavier, and far more deliberate than speed boats, but with a depth of subject matter that can keep a serious modeler busy for years. Whether you're after a ready-to-run retrieval tool for your racing fleet, a manageable first scale kit, or an expert-grade GRP build that takes eighteen months to finish, the category has an answer. This guide covers all of it.
The RC tug boat market splits cleanly into three types of buyer. The first wants something under $100 to throw in the pond — toy-grade, fun for an afternoon, not a scale model. The second wants a premium RTR that actually looks like a tug and works hard (the Pro Boat Horizon Harbor is the obvious answer here). The third — the most underserved by most roundups online — wants a real kit with a real prototype behind it, and needs to know which hull material, what motor to pair with it, and which brands are still operating.
This article covers all three segments honestly, flags what's discontinued, and gives you the spec and retailer information that actually matters for each product. No padding, no near-identical white-label listings repeated five times to hit a number.
Quick Picks — Which RC Tug Is Right for You?
| Your Situation | Best Pick |
|---|---|
| Beginner / gift / pond toy under $100 | Losbenco 1/72 RTR |
| Premium RTR — best all-rounder, retrieval boat | Pro Boat Horizon Harbor 30" |
| First real scale kit (ABS hull, manageable build) | Billing Boats Banckert B516 or Krick/Robbe Neptun |
| Best wooden kit with RC hardware included | OcCre Hercules 1:50 |
| Advanced expert build, best-in-class fidelity | Caldercraft Imara 1:32 |
| Historical/story kit for display or RC | Billing Boats Hoga (USS Hoga) |
What Makes a Great RC Tug Boat?
Before getting into the products, it's worth understanding what separates a good RC tug from a toy that disappoints. Real tugboats are displacement-hull vessels — they push through the water rather than planing across it. That changes everything about how you power them.
Slow speed is a feature, not a bug. Scale tugs look right at 3–5 km/h. A brushed motor with a 2:1–3:1 gearbox swinging a proper Kort-nozzle prop is the correct spec for most scale builds, not a high-KV brushless motor spinning flat-out. If you put a fast-electric motor in a scale tug and run it at speed, it looks absurd. The prototype doesn't run that fast.
Hull material determines build path. ABS thermoformed hulls (Billing Banckert, Krick Neptun) remove the hardest woodworking step and are the recommended entry point for first-time kit builders. Plank-on-frame wood kits (Billing Hoga, OcCre Hercules) are more demanding but give you a closer connection to traditional model-making. GRP (glass-reinforced plastic) hulls (Caldercraft Imara) are the high-end standard — precise, heavy, and expensive.
Watertightness is the #1 failure point. Budget RTRs turtle or flood. Even mid-range kits need prop-shaft sealing with marine grease and O-rings, proper ballasting, and sealed hatches. This isn't a minor point — it's the thing that separates a tug that runs for years from one that sinks on its second outing.
Working features set scale tugs apart. Kort nozzles (improve thrust and maneuverability), swiveling Kort nozzles (true azimuth-style control), working tow hooks, water cannons, smoke generators, and LED lighting are what make a scale tug a conversation piece at the pond. Most are optional add-ons or kit-specific; factor them into your total budget.
The Three RTR Options
#1 — Pro Boat Horizon Harbor 30" — The One to Buy
If you want an RC tug that works straight out of the box and is genuinely capable, the Horizon Harbor is the clear answer. It's the most praised RTR tug in the hobby and the closest thing to a consensus pick at clubs and on forums.
Specs at a glance:
| Spec | Detail |
|---|---|
| Hull length | 30 in (762 mm) |
| Hull type | Single-screw monohull, molded composite |
| Motor | 700-size brushed (factory installed) |
| ESC | 40A (spec per Pro Boat); 60A (per some retailers) |
| Battery required | 11.1V 5000mAh 3S LiPo, EC3 connector (not included) |
| TX power | 4× AA cells |
| Electronics | 3-ch 2.4GHz FHSS radio, receiver, metal-gear waterproof servo, LED nav/mast lights |
| Battery/charger included | No |
| Self-righting | No |
| Retrieval capacity | Up to 48" racing boats |
| Price | ~$349.99 MSRP; street ~$350–$400 |
The composite hull is more impact-resistant than fiberglass — relevant when you're nudging a 6S catamaran back to shore. Owners report solid runtime of 20–60 minutes on a 5000mAh 3S depending on throttle load, and the boat stays genuinely watertight across multiple sessions.
The criticisms are real but workable. Reverse is weak — owners describe it as more of a brake than a true reverse. The included radio is functional but basic; some buyers swap in a Spektrum or Futaba unit immediately. Channel 3 (water cannon) requires a separately purchased pump (PRB380001, ~$69.99) and a small number of units shipped with non-functional channel 3. None of these are dealbreakers, but go in knowing the water cannon isn't plug-and-play.
Scale purists will note it's a semi-scale "appearance" model — Pro Boat markets it by length, not by a specific prototype. It's been incorrectly listed as 1:25 on several retail sites and competitor articles; that's not an official Pro Boat spec. If prototype accuracy matters to you, look at the kit section below.
→ Check the current price on Amazon
Perfect for: Race fleet owners who need a capable retrieval boat; intermediate hobbyists who want a capable RTR tug without a build project.
#2 — Losbenco 1/72 RC Tugboat — Best Under $100
The Losbenco is the best-selling sub-$100 tug on Amazon for good reason: it's a genuine "splash around the pond" option with low-battery alerts, a USB charger, and a pistol radio included in the box. It's not a scale model, it's not particularly fast (up to ~9 mph), and runtime per battery is around 20 minutes (40 if you carry a spare). But as a gift or entry-level pool toy, it's honest value.
Don't expect scale fidelity at 1:72 — the hull is ABS, the motors are toy-grade, and the whole thing is sized for a backyard pond. If that's what you need, it delivers it cleanly.
Perfect for: Gifts, beginners dipping a toe in the hobby, families wanting a casual pond boat.
#3 — POCO DIVO US Seaport Tug 23" — Use With Caution
The 23" Seaport Tug (ASIN B082MV42CL, ~$150–$200) sits between toy and mid-range and has a water-spray tower that makes it look the part. Reviews are genuinely mixed, though — "steering is horrible" and "died after 10 minutes" are recurring complaints, and runtime is only 10–15 minutes. Mention it if asked, but it's not a primary recommendation.
What About the AquaCraft Atlantic II and Hobby Engine Richardson?
Both deserve a mention for context, but neither is a viable primary recommendation today.
AquaCraft Atlantic II (AQUB5726): The 30.3" fiberglass-hull RTR that many scale fans preferred over the Pro Boat for its looks — pre-painted fiberglass hull, brass 3-blade prop, Tactic TTX491 radio. Owners loved it; one logged nine successful race-boat rescues. The problem: AquaCraft has wound down and the Atlantic II is effectively discontinued. You may find one on eBay or as third-party stock, and it's worth buying if the price is right — but don't plan a purchase around it.
Search Amazon for used/third-party stock
Hobby Engine Richardson (HE0721, B00LQDPABO): A 1:36, 560mm twin-screw RTR with two chimney smoke generators, working lights, horn, searchlight, and a 7.2V 800mAh battery and charger included. Genuinely impressive feature list for the price, and owners report it runs well and stays watertight. The problems: "currently unavailable" on Amazon US, intermittent at UK/AU retailers, only ~20 minutes runtime on the stock battery, and it cannot steer in reverse. If you can find one, it's a solid mid-range pick. If you can't, the Pro Boat is the safer choice.
The Kit Section — Building a Real Scale Tug
This is where the category gets serious. If you want a tug that looks like an actual prototype — because it is based on one — you're in kit territory. Here's how to read the market.
ABS hull kits (Billing Banckert, Krick Neptun): The hull is pre-formed. You add superstructure, fittings, running gear, and electronics. Recommended for first-time kit builders.
Plank-on-frame / plank-on-bulkhead wood kits (Billing Hoga, OcCre Hercules): More traditional, more demanding, more rewarding. Expect weeks to months of build time. The OcCre Hercules is particularly well-supported with video tutorials.
GRP hull kits (Caldercraft Imara): Expert grade. Expensive, precise, heavy. For experienced builders who know what they're doing.
Important note on motors for scale tugs: Forum consensus is clear — scale tugs need low-RPM, high-torque setups. A geared brushed motor (Krick MAX Gear 540 2.5:1, MFA/Graupner 400/500 equivalent) running at 6–7.4V is the right answer for most 1:50 harbor tug builds. Brushless can work but is usually overkill for pure scale cruising. If you're converting a legacy Dumas kit, the community recommends something like a 750KV outrunner with a 2:1 gearbox to hit the ~2,000–3,000 prop RPM target. For RTR-to-kit guidance on motors and ESCs, see our RC boat motors guide.
#1 — Billing Boats Banckert B516 — Best First Scale Kit
Specs:
| Spec | Detail |
|---|---|
| Scale | 1:50 |
| Hull length | 650 mm (25.59") |
| Hull material | ABS (thermoformed) + laser-cut wood fittings |
| Propulsion | Single screw, Kort nozzle, stern tube + shaft + rudder included |
| Motor/ESC | Not included |
| Electronics | Not included |
| Build difficulty | Experienced (Billing Boats rating) |
| Prototype | Dutch harbor/coastal tug "Maasbank"/"Banckert," built 1965, Millingen, 1800 HP |
| Price | ~£249.99 (Wonderland Models) |
The Banckert's ABS hull is the main reason to choose it as a first scale kit — it eliminates the most demanding step of hull construction while still giving you a real build project. The 1:50 scale hits the sweet spot for harbor tugs: big enough to fit useful running gear, small enough to store and transport reasonably. The Kort nozzle is included in the kit, which matters for both maneuverability and scale accuracy.
Builders consistently note that Billing's instructions can be "brief and obscure" — a recurring complaint across the Billing range. Budget time to cross-reference with RCGroups build threads. The hull is explicitly marketed as RC-ready, and the prototype (a Dutch coastal tug with genuine working history) gives you something to photograph against.
Available more reliably at: Billing Boats USA | Premier Ship Models
Perfect for: First-time kit builders who want a real scale model without planking a hull from scratch.
#2 — Krick/Robbe Neptun R1030 — Best ABS Kit with Working Tow Hook
Specs:
| Spec | Detail |
|---|---|
| Scale | 1:50 |
| Hull length | 570 mm; Width 175 mm |
| Hull material | ABS hull + ABS superstructure + laser-cut wood interior |
| Propulsion | Single 3-blade prop, swiveling Kort nozzle, stern tube + shaft, functional remote tow hook |
| Recommended motor | Krick MAX Gear 540 2.5:1 geared motor (ref. 42275) |
| Recommended ESC | Robbe/Krick WP1060 type; 6–7.4V, 2-channel radio |
| Electronics | Not included |
| Total displacement | 2500 g |
| Build difficulty | Intermediate |
| Prototype | Hamburg Bugsier-series harbor tug (semi-scale) |
| Price | £349.95 (Hobbies UK) |
The Neptun's swiveling Kort nozzle is its headline feature — it gives the model genuine azimuth-style maneuverability that most kits don't attempt. The working remote tow hook is a legitimate operational feature, not a toy gimmick. Instructions are published in English, German, and French, which is notably better than the Billing experience.
A note on brand history: Robbe went bankrupt in 2015 and Krick acquired the range, now sold as "Romarin by Krick." The kits have continued without significant degradation in quality. The larger sibling — the Happy Hunter ocean salvage tug (twin 700 motors, fixed Kort nozzles, ~£774.99) — is the obvious next step up.
The Neptun isn't on Amazon US; it's a specialty-retailer product.
Available at: Hobbies UK (£349.95) | Cornwall Model Boats | krickshop.de
Perfect for: Intermediate builders who want a fully operational harbor tug with genuine azimuth-style maneuverability and a working tow hook.
#3 — OcCre Hercules 1:50 — Best Wooden Kit, RC-Ready
Specs:
| Spec | Detail |
|---|---|
| Scale | 1:50 |
| Hull length | 915 mm (36 in); Width 163 mm; Height 420 mm |
| Hull material | Plank-on-bulkhead laser-cut wood + Britannia-metal fittings |
| Running hardware | Propeller, prop shaft, self-lubricating bearings, RC rudder blade + servo anchoring points |
| Motor/Radio | Not included |
| Optional add-ons | LED Light Kit ref. 55010 |
| Build difficulty | Advanced/intermediate |
| Prototype | Steam tug Hercules (built 1907; San Francisco Red Stack fleet; National Historic Landmark) |
| Price | ~$319–$405 |
At 36 inches, the OcCre Hercules is the largest wooden kit in this roundup, and it's the most RC-ready of the wooden builds. Deck openings are designed for RC access; OcCre provides step-by-step video tutorials and instructions in five languages — a significant practical advantage over Billing's notoriously sparse manuals.
The prototype has genuine historical weight. The steam tug Hercules was built in 1907 by John H. Dialogue and Sons in Camden, NJ, for the Shipowners' & Merchants' Red Stack Fleet. She's a National Historic Landmark — the National Park Service HAER record CA-62 describes her as "the only oceangoing steam tug on the West Coast." As of 2023–2025, she's undergoing structural restoration at Mare Island, Vallejo, while Hyde Street Pier in San Francisco is rebuilt. There's real depth of subject matter here.
Builders praise the kit's quality and detail; the companion OcCre Ulises (OC61001, 1:30, 830 mm, ~$252) is the larger sister kit if you want a bigger build.
Available at: Ages of Sail | Modelers Central | Great Hobbies
Perfect for: Serious wooden-kit builders who want a well-documented, large-scale build based on a genuine historic prototype.
#4 — Billing Boats Hoga BB708 — The Pearl Harbor Story Kit
Specs:
| Spec | Detail |
|---|---|
| Scale | 1:50 |
| Hull type | Plank-on-frame wood (laser-cut) + plastic and metal fittings |
| Motor/Electronics | Not included in standard kit |
| Build difficulty | Intermediate–advanced |
| Prototype | USS Hoga (YT-146), Woban-class harbor/fire tug |
| Price | ~£159.99 (Wonderland Models) |
| Amazon stock | Low — "Only 2 left" (sold by ModelExpo) |
The Hoga is the most historically compelling kit in this roundup. The USS Hoga spent 72 continuous hours fighting fires at Pearl Harbor on December 7, 1941, and was described by the U.S. Naval Institute's Naval History (December 2023) as "The Littlest Hero." She received National Historic Landmark status on June 30, 1989, and is now preserved at the Arkansas Inland Maritime Museum.
As a wood plank-on-frame build, it's more demanding than the ABS Banckert. Stock is genuinely low (two units on Amazon at time of writing). If the story matters to you and you find one, it's worth buying.
Available at: Model Expo | Billing Boats USA
Perfect for: Builders drawn to historical subject matter; display-quality or careful RC conversion.
#5 — Aeronaut Kalle 2 / Jonny — German Engineering, Specialty Only
Aeronaut produces two distinct tug subjects worth knowing about:
Kalle 2 (AN3032): A 1:20 scale 1920s–30s steam harbor tug. Deep-drawn plastic hull, laser-cut wood, brass-etched parts, optional smoke generator. Charming small steam-tug subject; manageable build complexity.
Jonny (AN3030): A larger modern harbor/offshore tug with a GRP hull, ABS deck and superstructure, twin prop shafts and rudders, optional Kort nozzles, Schottel-unit conversion option, and two working water cannons. The Schottel conversion option is genuinely unusual at this price point and makes it one of the most capable modern-tug subjects available in kit form.
Neither is available on Amazon US. Both are specialty-retailer products.
Available at: Cornwall Model Boats | Premier Ship Models | Howes Models
#6 — Caldercraft Imara 1:32 — The Expert Benchmark
Specs:
| Spec | Detail |
|---|---|
| Scale | 1:32 |
| Hull length | 1105 mm (43.5 in); Width 292 mm |
| Hull material | GRP hull + GRP superstructure/funnel + CNC-cut birch ply decks |
| Propulsion | Twin screw (single-screw variant also available for live steam) |
| Part count | 1,400+, including ~800 cast-metal fittings |
| Build difficulty | Advanced/expert |
| Prototype | 1930s British twin-screw harbor tug "Imara" (Crown Colonies contract, Dar-es-Salaam; later RN "Perseverance") |
| Price | ~$872 (sale) – $1,301; ~€860 |
The Caldercraft Imara is the high-end GRP benchmark for scale harbor tugs. At 1,400+ parts — including what the manufacturer describes as saloon china and crockery — this is not a beginner project. GRP hull, CNC-cut birch ply decks, and an 800-piece cast-metal fittings set place it in a category of its own.
Builders pair it with quality geared brushed motors and plan for serious finishing time. The twin-screw configuration adds operational authenticity. It's not on Amazon US; this is strictly a specialty-retailer product.
Available at: Ages of Sail | Premier Ship Models | Cornwall Model Boats
Perfect for: Expert-level builders with budget to match, who want the most detailed scale harbor tug build available.
#7 — Dumas Jersey City / Lord Nelson Victory — Buy Now, While Stock Lasts
Important: Dumas Products closed permanently on June 5, 2026, after nearly 80 years in business. Orders stopped in mid-April 2026; remaining stock sits at retailers and Amazon while it lasts.
Jersey City (1:32, 36", ASIN B0006O4WCC): A vacuum-formed plastic hull with die-cut superstructure and laser-cut wood. Based on a 1960s railroad tug; a popular RCU/RCGroups project. The Carol Moran (1:24, 50") and Shelley Foss are related builds that saw extensive community builder attention.
Lord Nelson Victory (1:16, 28"): A balsa-planked wood kit — the Dumas "largest scale" option.
Community builders routinely modernize these kits with twin brushless outrunners (750KV with 2:1 gearbox to hit Dumas' 2,000–3,000 prop RPM target), LiPo batteries, and Kort nozzles. Mack Products supplies upgraded running gear.
With Dumas closed, these kits are now collectible. If you see one at a reasonable price, it won't come back into production.
Check Price on Amazon — Jersey City
Available while stock lasts at: Model Expo | Tower Hobbies | MPM Hobbies
Kit Comparison Table
| Kit | Scale | Hull Length | Hull Material | Kort Nozzle | Motor Included | Price (approx.) | Amazon |
|---|---|---|---|---|---|---|---|
| Billing Hoga BB708 | 1:50 | — | Wood plank-on-frame | No | No | ~£160 | Link |
| Billing Banckert B516 | 1:50 | 650 mm | ABS hull | Yes (fixed) | No | ~£250 | Link |
| Krick/Robbe Neptun R1030 | 1:50 | 570 mm | ABS hull | Yes (swiveling) | No | ~£350 | Specialty only |
| OcCre Hercules OC61002 | 1:50 | 915 mm | Wood plank-on-bulkhead | No | No | ~$320–$405 | Link |
| Aeronaut Kalle 2 | 1:20 | — | Plastic + wood | No | No | varies | Specialty only |
| Aeronaut Jonny | semi-scale | — | GRP hull | Optional | No | varies | Specialty only |
| Caldercraft Imara CA7012 | 1:32 | 1105 mm | GRP hull | No | No | ~$872–$1,301 | Specialty only |
| Dumas Jersey City | 1:32 | 914 mm | Vacuum-formed + wood | No | No | ~$170 | Link |
Real-World Tug Boats — Context for Scale Modelers
Understanding the prototype makes the model more interesting. Here's the condensed version of what you need to know.
Harbor / ship-assist tugs are the most common kit subjects — typically 20–32 m long, 2,000–4,000+ HP, used for berthing and unberthing large vessels and escort work. The Neptun (Hamburg Bugsier-series), Imara (1930s British), and Banckert (Dutch coastal) all fit here.
ASD tugs (Azimuth Stern Drive) are the dominant modern configuration. Two azimuth thrusters mounted near the stern drive the boat; the towline runs over the bow from a foredeck winch. About 83% of US "tractor"-style tugs are actually ASDs. They generate excellent steering force but carry a "girding" capsize risk in high-speed indirect towing — where the towline under high load pulls the stern around.
Tractor tugs (VSP / forward azimuth) place their propulsion forward of amidships, with the towline at the stern, which makes them inherently resistant to girding. The Voith-Schneider Propeller (VSP) is the engineering benchmark — a cycloidal system with rotating vertical blades that delivers instant thrust in any horizontal direction. Voith claims it goes "from full speed ahead to full speed astern in three seconds." It's roughly twice the cost of a comparable ASD installation, which is why VSP tugs are concentrated in the highest-demand harbors: Rotterdam, Hamburg, Bremerhaven, Antwerp.
Rotor tugs use three azimuth thrusters for maximum stability under load. A small fleet, mainly Northern Europe and Canada. The first pair (RT Innovation, RT Pioneer) were delivered in 1999.
Ocean-going / salvage tugs are the powerful deep-sea vessels — the Smit Rotterdam (1975, 22,000 HP, 75 m) was once the most powerful tug in the world. The Krick Happy Hunter is the RC kit subject here.
River (pusher) tugs are flat-bowed vessels that push barge trains on inland waterways. The "Springer" is the classic RC pusher-tug class — free plans via NW RC Shipmodelers, Seattle, with commercial alternatives from Zippkits (Tugster) and various 3D-printable "microspringer" designs. An ideal cheap first scratch-build if you want to start basic.
Fire-fighting tugs and fireboats carry water monitors. USS Hoga fought fires at Pearl Harbor for 72 hours. The Krick Düsseldorf fireboat kit (1:25) is the RC kit representation of this type.
Classic steam tugs are the heritage subjects — the OcCre Hercules (1907, Red Stack fleet, San Francisco) and the Aeronaut Kalle 2 (1920s–30s) are the main kit options. The steam tug Hercules is currently undergoing structural restoration at Mare Island, Vallejo.
Robert Allan Ltd. (Vancouver) is the world's leading tug designer, responsible for an estimated 35–40% of all tugs built worldwide; the firm delivered its 1,000th tug in 2017.
Which RC Tug Should You Buy?
You want an RC pond toy, not a scale model: Losbenco 1/72 under $100. Expect 20-minute runtimes, toy-grade build quality, and fun. Don't overthink it.
You want a ready-to-run tug that actually works: Pro Boat Horizon Harbor. Buy a 5000mAh 3S LiPo separately and add the water pump (PRB380001) if you want the water cannon. Budget ~$450 total with battery.
You want your first real scale kit: Billing Boats Banckert (ABS hull, 1:50, manageable build) or Krick/Robbe Neptun (ABS hull, swiveling Kort nozzle, working tow hook). The Neptun is better-featured; the Banckert is slightly more accessible as a first build.
You want a serious wooden kit with proper documentation: OcCre Hercules. The RC hardware points are built in, the video tutorials are there, and the prototype is genuinely interesting.
You want the historical story kit: Billing Boats Hoga. Stock is low. If you're interested, move on it.
You have expert skills and a serious budget: Caldercraft Imara. There's nothing better in this category for a 1930s British harbor tug at this level of detail.
You see a Dumas kit at a good price: Buy it. They're not coming back.
Frequently Asked Questions
Q: What battery does the Pro Boat Horizon Harbor use?
It requires an 11.1V 5000mAh 3S LiPo with an EC3 connector, sold separately. The transmitter runs on 4× AA cells. Budget approximately $40–$60 for a quality 3S LiPo from a reputable brand; don't go cheap on the battery.
Q: Can I use a brushless motor in a scale tug kit?
You can, but it's usually not the right choice for pure scale cruising. Scale displacement tugs look correct at slow, realistic speeds — a high-KV brushless motor overspeeds a scale prop and makes the model look wrong on the water. A geared brushed motor (Krick MAX Gear 540 at 2.5:1, MFA/Graupner 400/500 equivalent) is the forum-consensus recommendation for most 1:50 harbor tug builds. Brushless setups are used by modelers converting older Dumas kits who want more power headroom, typically with 750KV and a 2:1 gearbox.
Q: What does "Kort nozzle" mean, and why does it matter?
A Kort nozzle is a cylindrical duct fitted around the propeller. It accelerates flow through the prop disc, increasing thrust at low speeds — exactly what a harbor tug needs when pushing a large vessel at walking pace. It also protects the prop. For scale accuracy, most harbor tugs built after the 1960s have them; if your kit's prototype has a Kort nozzle, try to model it correctly. The Neptun's swiveling Kort nozzle goes further, simulating an ASD-style azimuth thruster.
Q: Is the AquaCraft Atlantic II still available?
Effectively no. AquaCraft has wound down and the Atlantic II is discontinued. You may find third-party or used stock on eBay or Amazon, and it's a good boat if you find one at a fair price — but don't count on it as a primary option.
Q: Are Dumas kits worth buying now that the company has closed?
Yes, while stock lasts. Dumas closed permanently on June 5, 2026, after nearly 80 years. The remaining inventory at retailers and Amazon is it. The kits are well-regarded, particularly the Carol Moran, Shelley Foss, and Jersey City builds; the community on RCGroups has extensive build documentation. They won't be restocked.
Q: What's the difference between ASD and VSP tug propulsion?
ASD (Azimuth Stern Drive) tugs use two azimuth thrusters at the stern — the dominant modern design, making up roughly 83% of US "tractor"-style tugs. They're highly maneuverable but carry a girding risk in high-speed indirect towing. VSP (Voith-Schneider Propeller) is a cycloidal system — rotating vertical blades on a disc — that delivers thrust in any direction instantly, going from full ahead to full astern in about three seconds. It's significantly more expensive than ASD and is concentrated in the highest-demand European ports. For RC modeling, the Krick Neptun's swiveling Kort nozzle approximates ASD-style behavior.
Q: What scale is the Pro Boat Horizon Harbor?
Pro Boat markets it by length (30"), not by a named scale. Several competitor articles and retail listings label it "1:25," but that's not an official Pro Boat specification. If true prototype scale is important to you, the Horizon Harbor is a semi-scale "appearance" model — excellent as a working RC boat and retrieval vessel, not as a scale replica.
Conclusion
The RC tug boat category rewards the effort you put in. If you just want something to drive around a pond, the Losbenco gets you there for under $100. If you want an RC boat that works hard and holds up over time, the Pro Boat Horizon Harbor is the clear RTR answer. And if you want to build something worth putting on display — a model with a real prototype, a real history, and real craftsmanship behind it — the kit options from OcCre, Billing, Krick, Aeronaut, and Caldercraft give you a range from manageable first builds to multi-year expert projects.
A few things to take away:
- ABS-hull kits (Banckert, Neptun) are the right entry point for first-time scale kit builders.
- Motor selection matters — scale displacement tugs need geared brushed motors, not high-KV brushless.
- Seal the prop shaft and ballast properly — watertightness is the failure point that kills more scale tugs than anything else.
- Dumas is closed — buy remaining stock if you find it at a reasonable price.
- The Pro Boat Horizon Harbor is the RTR benchmark; nothing else at the price point matches its capability.
For more on the broader category, the RC boat motors and ESC guide covers motor sizing in detail. If you're outfitting a kit and need battery guidance, the LiPo battery guide is the place to start. And if you're new to the hobby and still deciding what kind of RC boat to build your collection around, best RC boats overall covers the full field.