A Sampling of Projects
Small Passenger Vessel - M/V ANGEL ISLAND
Just 65' long x 30' beam, this double-deck ferry actually can carry 400 people on the short crossing to Angel Island State Park in San Francisco Bay (please click to see the picture here) . One of Alan's first assignments in the small passenger vessel industry: to do the detail design for several features of the ferry's outfit - shafting, rudder installation, instrument console, railings, access (stairs and a bow ramp), and tankage. Alan also did the hydrostatics portion of the design, including floodable length and damage stability analysis, intact stability calculations and, finally, the stability test write-up. For over 30 years, this little ferry has been carrying tourists, hikers, picnickers, history buffs, and school outings to one of the most scenic and unspoiled places in the Bay area. For more information about the ferry service, check out http://www.angelislandferry.com.
Cruise Ship AZURE SEAS
Built in 1955 by Harland & Wolff in Belfast, Northern Ireland, the passenger liner SOUTHERN CROSS was originally based in Southampton, England, and operated an around-the-world service until 1971. As jet aircraft took over the trans-oceanic passenger trades, SOUTHERN CROSS entered the short-cruise trade, based in Europe and also in Miami. In 1980, under new ownership and renamed S.S. AZURE SEAS, the ship introduced 3 and 4-night cruises to the port of Los Angeles. The owner, Admiral Cruise Lines, carried out a major renovation to S.S. AZURE SEAS in 1988. Alan carried out the engineering for the newly created spaces: a casino, conference rooms, and 12 luxury suites. This project encompassed space arrangements (working together with ship's force and interior decorators), structural modifications, piping, HVAC, and electrical distribution. Alan analyzed and kept track of the vessel's stability, as impacted by the modernization, and by subsequent modifications and operational changes. AZURE SEAS was a great success in building up the short-cruise trade on the west coast. Due to a limited capacity (740 passengers) she was eventually replaced on the run by a larger, newer vessel. After Admiral Cruise Lines was merged into Royal Carribean Cruises, AZURE SEAS was transferred to the Caribbean (1990) and eventually sold to Dolphin Cruise Line as OCEAN BREEZE. This fine ship, christened SOUTHERN CROSS in 1955 by Queen Elizabeth, was finally retired in 2002. Alan feels that it was an honor to have played a role in the life story of this proud liner. Please click to see the picture.
Cable ferry - M.J. LEE
This little car-ferry operates 15 hours per day, crossing the Willamette River near Canby, Oregon. Alan was project engineer for this ferry while employed at the engineering firm of Art Anderson Associates in Bremerton, Washington. The project started with a study of the river crossing, the existing shoreside infrastructure, and the existing 45-year old cable ferry. An economic study was performed, exploring a wide range of sizes, configurations, and propulsion schemes for a brand new ferryboat. Based upon comparison of the alternatives set forth in the economic analysis, the owner (Clackamas County, Oregon) formulated a set of design requirements. This evolved into a concept design, then a detailed contract design, and, in 1997, the new ferryboat, M.J. LEE, went into service. This unusual cable ferry is operated by a single person, except during peak summer days when a second person is added to the crew in order to speed up the collection of tolls. Propulsion is by a pair of Z-drives. But the most unusual feature of the ferry is the overhead electric trolley, from which the ferry draws its power, thus eliminating the need for internal combustion engines Please click to see the picture.
Research vessel conversion to cruise ship
This project entails the conversion of a 300’ oceanographic research vessel to a small cruise ship for a European entrepreneur. Alan, working closely with the owner, prepared a mostly-new interior layout for the ship, incorporating large lounge and entertainment areas and much larger staterooms and suites. As a SOLAS passenger ship, the converted vessel must meet stringent fire safety regulations.
A sample of the fire ratings for bulkheads (for two decks only) is shown in this drawing.
Another sample drawing (a “key plan” for steel structural modifications) is also shown.
One aspect of a study of the watertight subdivision of the vessel, which remains basically unchanged from the original ship, is shown in the floodable length curves shown at the bottom. This was only the beginning of the stability and subdivision analysis, as SOLAS rules for passenger ships have become more stringent in recent years.
Coastal ferry conversion to cruise ship
In 2007, expedition cruise pioneer Lindblad Explorations purchased the Norwegian ferry Lyngen and proceeded to convert the vessel to a 148-passenger cruise ship (see picture). Renamed NATIONAL GEOGRAPHIC EXPLORER, this is Lindblad’s biggest ship and it has been sailing, on some truly remarkable, one-of-a-kind itineraries since it was relaunched at Astican shipyard (2008) in the Canary Islands. The ship now has an ice-strengthened hull and makes seasonal voyages into the Arctic and Antarctic (see picture). Alan carried out a portion of the detail design work, on-site at the shipyard, together with a number of other engineers from Sweden, Norway, Spain, Monaco, and USA. …..truly a diverse, international team which Lindblad brought together.
Stability analysis - small passenger vessels
Often the builder of small passenger vessels is also the designer. In such cases, and without a naval architect on boatbuilder’s staff, the builder will call upon an independent naval architect to do stability calculations – at a minimum, sufficient calculations to verify that the design is in compliance with Coast Guard rules (Subchapter T or Subchapter S). Alan is experienced at carrying out analysis of intact stability, floodable length, and damage stability, for many different types of craft, in accordance with USCG rules and also in accordance with SOLAS Convention rules.
The diagrams form part of a relatively simple analysis, for the “wind-heel” criterion and for the “passenger heel” criterion. This was done for a small tour boat operating in Alaska, which was designed by the builder. Upon completion of the boat, the inclining experiment (stability test) and then the finalized stability calculations were carried out by Alan.
Overnight Charter Boat "NORTHWEST NATIVE" Project
The midship section drawing shows basic structure of the boat. Note the use of "sandwich" construction in the shell and decks. The core material is cross-linked PVC foam. There is no wood structure in the hull, and very little in the deckhouse. Typically, for a boat this size, there are several other structural drawings needed to convey the structural design of the entire vessel. So what is shown here is just a preliminary structural design.
Length Overall: 63'-2" (19.2m)
Beam: 19'-0" (5.79m)
Keel (Navigational) Draft: 7'-2" (2.17m)
Displacement (full load): 119,800 lbs (54.4t)
Construction material: GRP (e-glass / vinylester)
Sandwich core material: Airlite B-5.00 foam
Main diesel engines: (2) Cummins QSL9 (pending)
Brake horsepower: 2 x 405 = 810 BHP total (Medium Continuous Duty rating @ 2100 RPM)
Fuel capacity: approx 2000 gallons (7570 liters)
Fresh water capacity: approx 400 gallons (1514 liters)
Passenger capacity: 12 for overnight cruises / 36 for day-trips
Mining Truck Barge for ORINOCO EXPRESS, C.A.
Alan was commissioned to design a barge to ferry heavy mining trucks across the Orinoco River in Venezuela. Design drawings were annotated in Spanish. Communication with the client, located in Puerto Ordaz, Venezuela, was primarily by e-mail. Drawing shows the midship section.
VENETIAN LADY was built in 2007 for Venetian Lady Yacht Charters (Miami, FL) www.venetianlady.com. The vessel features gourmet dining for 140 guests in two dining rooms. The vessel has two dance floors and two full bars on three decks. There is a full galley located below the main deck. Dimensions are 130’ LOA x 30’ beam. Alan carried out a large part of the marine engineering and electrical design for this Coast Guard-inspected (Subchapter T) passenger vessel. The overall design of the boat was carried out by One2Three Pty. Ltd. (Melbourne, Australia). Interior décor is the creation of Lisa Parsiola (South Bend, IN).
Given the sub-tropical location, there is no need for interior heating, but there is a large air-conditioning load. Alan carried out thermal load analysis, coordinated the selection of HVAC vendors and major components, and arranged the (5) air handlers, the modular chiller unit, the associated seawater piping, freshwater piping, and the ductwork. The attached sheet (3606-3C-1) is an example of the HVAC design.
Alan carried out an electrical load analysis for both the AC and DC electrical systems, which lead to the rational selection of generators, batteries, and battery chargers. Subsequently Alan designed the electrical distribution (one-line diagrams), of which the attached sheet (3606-4) is an example.
The photo show two of the air handlers which are located on the uppermost “Sky” deck.
Drawing-3C-1 shows a portion of the air conditioning ductwork located above the Upper Deck.
One sheet of the electrical one-line diagram 3606-4.