Maloyaroslavets (Project 677 Lada-class submarine)

History

Maloyaroslavets is a Russian Project 677 Lada-class diesel-electric submarine being built at Admiralty Shipyards in St. Petersburg for the Russian Navy. The submarine was designed by the Rubin Design Bureau, which is part of United Shipbuilding Corporation.

A ceremonial keel-laying for Maloyaroslavets took place at Admiralty Shipyards on August 27, 2026, marking the formal start of construction. United Shipbuilding Corporation described the vessel as the sixth submarine in the Lada series. A TASS report described it more specifically as the fifth vessel of Project 677 and the sixth order being built at Admiralty Shipyards under the Rubin design.

Project 677 is a Russian series of non-nuclear submarines intended for the Russian Navy. The program includes submarines already commissioned as well as additional boats under construction.

Construction

The keel-laying ceremony was attended by Russian government, naval, municipal, and shipbuilding representatives. According to an Izvestia report, the ceremony took place at Admiralty Shipyards in St. Petersburg and was attended by Maritime Board Chairman Nikolay Patrushev and Russian Navy Commander-in-Chief Admiral Alexander Moiseev.

At the time Maloyaroslavets was laid down, Admiralty Shipyards was continuing serial construction of Project 677 submarines. TASS reported that Kronstadt entered Russian Navy service in January 2024 and Velikiye Luki followed in December 2025. Vologda and Yaroslavl had been laid down on June 12, 2022.

Design

Maloyaroslavets belongs to the Project 677 Lada class of diesel-electric submarines developed by Rubin Design Bureau. Project 677 incorporates automated control of the submarine, its combat and technical systems, and its weapons. The design also uses measures intended to reduce acoustic signature, including an anti-sonar coating.

Published Project 677 data compiled by GlobalMilitary.net describe a single-shaft propulsion arrangement using an electric propulsion motor with permanent magnets and storage batteries. These figures describe the Project 677 class rather than confirmed vessel-specific measurements for Maloyaroslavets.

Armament

Project 677 submarines are armed with torpedoes and missiles. Published class data list six 533 mm torpedo tubes and provision for torpedoes, missiles, or mines. Maloyaroslavets-specific weapon load details have not been stated in the supplied sources.

Program status

Maloyaroslavets was under construction following its August 2026 keel-laying ceremony. No launch date, commissioning date, or confirmed service-entry schedule for the submarine is provided in the available source material.

Specifications (Project 677 Lada class)

General characteristics

• Type: Diesel-electric attack submarine
• Surface displacement: 1,793 tonnes
• Submerged displacement: 2,743 tonnes
• Length: 72 m (236 ft)
• Beam: 7.1 m (23.3 ft)
• Crew: 35
• Propulsion: Electric propulsion motor with permanent magnets, storage batteries, one shaft

Performance

• Maximum surface speed: 10 knots
• Maximum submerged speed: 21 knots
• Maximum depth: 300 m (984 ft)
• Range: 7,500 km
• Endurance: 45 days

Armament

• Torpedo tubes: 6 × 533 mm
• Weapon capacity: Published class data list 16 torpedoes or missiles, or up to 44 mines