The Spartan 690 ST is a 6.9-metre soft-top boat for buyers who want serious offshore capacity without giving up an open, social cockpit. A 245-litre fuel tank, seven-adult passenger rating and 150–300 hp range place it firmly in long-day, heavily loaded fishing and family-cruising territory.

Spartan 690 ST review: the quick verdict

The 690 ST is the open-air choice in the larger Spartancraft range. Its 2.5-metre beam provides useful deck space, while the soft-top layout keeps the helm connected to the cockpit. It is well suited to owners who carry more people or equipment than a 630-class boat comfortably accommodates and who want greater engine and fuel capacity for longer runs.

Spartan 690 ST specifications

Power range and offshore performance

The 150–300 hp range gives the 690 ST substantial setup flexibility. Owners focused on economical cruising can choose a conservative installation, while those carrying heavy fishing equipment, larger crews or water-sports loads may prefer more power reserve. The final engine choice should be made alongside propeller selection and a realistic assessment of completed boat weight.

The larger hull is intended to deliver a composed ride and stable platform at rest. High internal sides and an 800 mm gunnel height help protect the cockpit, while the wide beam supports movement around the boat when fishing or boarding. As with any offshore boat, trim and speed should be adjusted to the conditions rather than treated as fixed performance settings.

Fuel capacity and range planning

The 245-litre tank is a meaningful step up from the 630 models and supports longer routes or multiple days of mixed use. It does not replace careful planning: owners should log real fuel burn with the chosen engine, maintain a conservative reserve and account for sea state, wind, current, load and time spent trolling.

Soft-top versatility

The soft-top keeps the 690 ST feeling open and accessible. It allows easy communication between helm and cockpit, supports ventilation in warm weather and provides shade when required. The trade-off versus a hardtop is less enclosure in cold or wet conditions, making typical climate and boating season an important part of the ST-versus-HT decision.

Towing and ownership

The published towing figure is 2,550 kg. With fuel, engine, batteries and accessories, vehicle and trailer matching require careful attention. Confirm the final on-trailer mass and tow-ball loading rather than selecting a tow vehicle from the headline figure alone.

Who is the Spartan 690 ST for?

• Offshore anglers carrying substantial equipment and crew.
• Families wanting seven-adult capacity and generous deck space.
• Owners who prefer an open helm and soft-top ventilation.
• Buyers seeking up to 300 hp without moving to a fully enclosed hardtop.

Frequently asked questions

How much horsepower can the Spartan 690 ST take?

The published range is 150–300 hp. Final selection should reflect load, intended speed and operating conditions.

What is the fuel capacity?

The Spartan 690 ST carries 245 litres of fuel. Actual range depends on the complete setup and operating profile.

How many people can the 690 ST carry?

The published capacity is seven adults, subject to certified loading limits and safe distribution of passengers and equipment.

View the Spartan 690 ST model details and configuration options.

Published figures are model specifications. Performance, range and towing weight vary with engine, propeller, load, options and conditions; confirm the final package with Spartancraft before purchase.