St. Lawrence Cruise Lines operates calm-water cruises on the St. Lawrence River, offering scenic riverboat journeys with included shore tours and excursions between Kingston, Montreal, and other historic Canadian river destinations.
Kingstown, Saint Vincent And The GrenadinesUpdated Jul 2003
St. Vincent Port Authority manages and operates the port facilities in Kingstown, Saint Vincent and the Grenadines, providing maritime services and infrastructure support.
Stabil Drill provides best-in-class downhole drilling tools and solutions, including manufacturing, rentals, welding, and repairs, serving demanding drilling environments with a fleet of over 25,000 rental tools.
Stage Harbor Marine is a family-run marina in Chatham, MA, offering new and pre-owned boat sales, marine services, and repairs, including Mercury and Yamaha service dealership.
Stallion Offshore Quarters, Inc. provides workforce housing and integrated jobsite equipment rental solutions, specializing in offshore living quarters, mobile offices, and support services for the oil & gas and maritime industries.
Stan Stephens Tours offers glacier and wildlife cruises from Valdez, Alaska, operating since 1971 with Coast Guard-inspected vessels and accessible tours.
Sheffield, Yorkshire, United KingdomUpdated May 2026
SPR is a subsidiary of Piston Rings UK Ltd. and offers the most comprehensive range of piston rings for marine and industrial applications.
Chrome plated, copper plated or plain cast iron - whatever rings you need SPR can supply them. SPR is unique in being able to supply such a wide range of
piston rings. We ensure that our rigorous quality standards are met at all stages of production and delivery.
We have the flexibility to meet the ever changing needs of our worldwide customer base. Our dedication to continuous improvement and development of our product range results in a ring which offers reliability and performance in the most arduous operating conditions.
A Better Service : SPR fully appreciates that the longer an engine remains inactive during overhaul or repair, the greater the impact on revenue. Rapid sourcing of quality spares reduces expensive down time. Same day despatch of stock items from SPR's extensive warehouse on orders received before 15.00 hrs (GMT) is standard. After this time, despatch will normally take place within 24 hours. For replacement rings, engineers continually rely on SPR to deliver - wherever they are in the world.
Standard Steamship Owners' Protection & Indemnity Association Limited is a UK-based mutual insurance association providing protection and indemnity insurance to shipowners and operators.