Coastal Defense | Images of Old Hawaiʻi

January 9, 2025 by Peter T Young Leave a Comment

Military Units on the Mōkapu Peninsula

At present, the Marine Corps Base Hawai‘i (MCBH) on Mōkapu peninsula at Kāne‘ohe Bay maintains and operates the airfield and other training facilities in support of the readiness and global projection of DoD and military operating forces. (MCBH)

The Base has trained countless carrier pilots for combat, provided logistical support for naval aviation forces throughout the Pacific, and supported airborne early warning and antisubmarine patrol operations. (Marines)

But the Marines weren’t there first, and they aren’t alone. Let’s look back …

On February 6, 1901, the US Army artillery corps divided into separate field and coast artillery components by General Order 9, War Department, implementing the Army Reorganization Act (31 Stat. 748), February 2, 1901.

Tactical artillery districts, each consisting of one or more forts and accompanying mine fields and land defenses, were established by General Order 81, War Department, June 13, 1901, to protect the Atlantic and Pacific coasts of the United States and the coasts of Hawai‘i and Puerto Rico. (US Archives)

In January 1905, President Teddy Roosevelt instructed Secretary of War William H Taft to convene the National Coast Defense Board (Taft Board) “to consider and report upon the coast defenses of the United States and the insular possessions (including Hawai‘i.)”

The Army mission in Hawai‘i was defined as “the defense of Pearl Harbor Naval Base against damage from naval or aerial bombardment or by enemy sympathizers and attack by enemy expeditionary force or forces, supported or unsupported by an enemy fleet or fleets.”

Renamed Headquarters Coast Defenses, following World War I and until the end of World War II additional coastal batteries were constructed throughout the Island.

President Woodrow Wilson’s signing of Executive Order No. 2900 established a military reservation on July 2, 1918 and set aside 322 acres of public land on the Mōkapu peninsula for military use. The first name for the Army installation on the east side of the Mōkapu peninsula was Kuwa‘ahohe Military Reservation.

In 1927, the Oahu contingent of the Army’s Coast Artillery Corps, based at Fort Kamehameha since 1908, established a coast defense position at Ulupau.

It began after WWI, when the Army expanded its ideas of how the Coast Artillery units of Fort Kamehameha should be protecting Pearl Harbor. Army planners realized that in addition to providing protection against a naval bombardment of Pearl Harbor, it was also necessary to prevent enemy forces from landing anywhere on Oahu.

This was to thwart a possible land attack on the naval base. In 1922, upon the signing of the Washington Naval Treaty, the US diverted twelve 240mm howitzers to Hawai‘i from shipments originally bound for the Philippines.

Article XIX of the treaty prohibited new fortifications or upgrading of coastal defenses of US, British, and Japanese bases in their small island territories in the Pacific. The treaty allowed expansion at the US bases in Hawai‘i, Alaska, Panama Canal Zone, and the mainland. (HABS 311-P)

Between WWI and WWII, ranchers leased some portions of the Kuwa‘aohe Military Reservation. Army usage at Kuwa‘aohe began to increase in anticipation of war. Although the Army did not man the former 240mm howitzer battery, they formed various coast artillery batteries and activity increased at the installation.

From 1940 to 1941, the military reservation had a different Hawaiian name – Camp Ulupau. The change in 1942 to Fort Hase honored Major General William Frederick Hase. He was the Chief of the Army Coast Artillery Corps from 1934 until his death. He received the Army Distinguished Service Medal for his service in France during WWI.

Fort Hase was the headquarters for the Army’s Harbor Defenses of Kāne‘ohe Bay (HDKB), created about 1940 to defend NAS Kāne‘ohe. Prior to and during World War II, Fort Hase grew from a humble beginning as a defense battalion to a major unit of the Windward Coastal Artillery Command.

About this time, Navy planners began eyeing the Mōkapu peninsula as the home of a strategic seaplane base. They liked the isolated location, the flat plains for an airfield and the probability of flights into prevailing trade winds.

The Navy acquired 464 acres of the peninsula for use by the PBY Catalina Patrol seaplanes [PB representing ‘Patrol Bomber’ and Y being the code assigned to Consolidated Aircraft as its manufacturer] for long-range reconnaissance flights. One year later, the Navy owned all of the Mōkapu peninsula except for Fort Hase. (Marines)

The Kāne‘ohe Naval Air Station was established following a recommendation by the Hepburn Board in 1938 to develop a base for squadrons of seaplanes to support the Pearl Harbor fleet. Construction of NAS Kāne‘ohe started in September 1939. By the end of 1941 the air station had approximately 90 permanent and 60 temporary buildings. (HABS 311-M)

The initial design for NAS Kāne‘ohe was to support five seaplane patrol squadrons. The first work was dredging seaplane lanes and using the spoils to fill shallow bay areas (about 280 acres total of filled land) for building sites.

Extensive dredging of Kāne‘ohe Bay and its entrance channel enabled ships and seaplanes to utilize the bay, and, of equal importance, provided the large amount of fill needed to enlarge the buildable area of Mōkapu peninsula. (HABS HI-311-P)

On December 7, 1941, the Imperial Japanese Navy attacked the air station minutes prior to the attack on Pearl Harbor. Of the 36 Catalinas stationed at the base, 27 were destroyed, six others were damaged, and 18 sailors perished in the attack.

The first Japanese aircraft destroyed in action were shot down at Kāne‘ohe, and Aviation Ordnanceman Chief Petty Officer John Finn, stationed at Kāne‘ohe Bay, was awarded one of the 1st Medals of Honor for valor on that day. (Marines)

The naval air station’s Search and Rescue Crash Facility (SAR) was responsible for the rescue of any boats in distress in Kāne‘ohe Bay, or any planes which might crash into these waters. Their charge was to save lives and attempt any possible salvage.

By August 1946 the SAR at Kāne‘ohe Naval Air Station managed twenty one boats, including three crash boats, each 63 feet long. Crews were responsible to check the permits of privately owned boats in Kāne‘ohe Bay waters. (HABS 311-M)

The first permanent Coast Guard aviation unit in Hawai‘i became reality in 1945 when a unit was located at the Naval Air Station Kāne‘ohe. The Coast Guard Air detachment was established to provide air-sea rescue services.

Coast Guard Air detachment runs went from Kāne‘ohe to Hickam Field, then Johnson Island, Majuro, Kwajalein, Guam, Sangley Point to Japan and then back through Wake, and Midway. The trip took between 20 and 28 days.

In 1949 the Navy decommissioned the Kāne‘ohe air station and the Coast Guard air detachment moved to NAS Barbers Point on the west coast of O‘ahu and was established as a Coast Guard Air Facility. (Coast Guard Aviation Association)

After WWII ended, Fort Hase “became a skeleton outpost” for the Army. It remained under Army jurisdiction until 1952 when the land became part of Marine Corps Air Station Kāne‘ohe. (HABS HI-311-P)

The Marine Corps assumed control of both Fort Hase and the air station after landowner, Mr. Harold K. Castle, refused to take back the property in 1951. Castle believed it was important to maintain a military base on the windward side of Oahu for defense and economic continuity. (MCBH)

On January 15, 1952 the Marine Corps re-commissioned the idle airfield Marine Corps Air Station Kāne‘ohe Bay, making it a training site for a combined air/ground team.

Following the reactivation of the Mōkapu installation in 1952 as a Marine Corps Air Station, the Crash Boat operations were manned by an all-Navy unit, and organizationally was attached to the Airfield Operations Department as a Waterfront Operations Branch.

Station Operations and Headquarters Squadron supported flight operations until June 30, 1972, when Station Operations and Maintenance Squadron (SOMS) was created to take its place.

SOMS served until it was disbanded on July 30, 1994. Marine Corps Air Facility, Kāne‘ohe Bay was formed on that date. Following the Base Realignment and Closure Committee’s decision to close NAS Barbers Point, the Kāne‘ohe base acquired 4 Navy P-3 patrol squadrons and one SH-60 Anti-Submarine squadron in 1999.

Under the 1994 Base Realignment and Closure the Marine Corps consolidated all of its installations and facilities in Hawai‘i under a single command, identified as Marine Corps Base Hawai‘i (MCBH); Marine Corps Air Facility (MCAF) and Headquarters Battalion (HQBN) are subordinate commands. The 1st Marine Expeditionary Brigade was also deactivated. (MCBH)

On May 22, 2009, a redesignation ceremony was held renaming Marine Corps Air Facility to Marine Corps Air Station Kāne‘ohe Bay and the commemorative naming of the Airfield to Carl Field in Honor of Major General Marion Eugene Carl USMC.

Major General Carl, the Marine Corps’ first air ace who downed 10 enemy aircraft during the battle for Guadalcanal, was twice awarded the Navy Cross, and who finished World War II with 18 kills to his credit, was killed June 28, 1998 during a robbery at his home in Roseburg, Oregon.

A Memorandum of Agreement between MCBH and Coast Guard Sector Honolulu calls for MCBH to provide rescue vessels and waterfront operation resources, and to coordinate with the Coast Guard Sector Honolulu’s Command Center (SCC) for SAR efforts in the vicinity of MCBH / Windward Oahu. (MCBH)

Known today as the Marine Corps Base Hawai‘i (MCBH), Kāne‘ohe Bay, this facility occupies virtually the entire peninsula and houses thousands of military personnel and their dependents. (HASS HI-311-C) Today there are almost 10,000 active-duty Navy and Marine Corps personnel attached to the base.

November 14, 2018 by Peter T Young Leave a Comment

Endicott – Taft

William Endicott was born in Salem, Massachusetts, in November 1826, to a prominent family with deep colonial roots. He studied at Harvard College, graduating from Harvard Law School in 1850. He then established his own law practice.

When Massachusetts expanded its supreme court, Endicott was named to one of the new seats in 1873; he served on the high court for nine years. Endicott resigned in 1882, citing ill health. (UVA)

During the 1870s, several advances took place in the design and construction of heavy ordnance, including the development of breech-loading, longer-ranged cannon, increasingly made of steel rather than iron. Coupled with these developments was a growing alarm over the obsolescence of existing seacoast defenses.

In 1883, the navy began a new construction program for the first time since the Civil War. The navy’s new ships were to be used offensively rather than defensively. This naval policy, along with the advances in weapon technology, required a new system of seacoast defenses which would safeguard America’s harbors and free the navy for its new role. (Coastal Defense Study Group)

In 1885 President Cleveland made Endicott his secretary of war. A joint army, navy, and civilian board was formed, headed by Endicott, to evaluate proposals for new defenses.

The Endicott Board of Fortifications, created by Congress in March 1885, recommended a major improvement program for the modernization of port defenses along the Eastern seaboard and Great Lakes. (UVA)

From 1890 to 1905, the United States undertook a massive program to modernize its coastal defenses. Known as the Endicott era; the huge construction program resulted in all the major harbors being fortified with newly designed steel guns ranging in size from 3 to 12 inches in diameter of bore and 12-inch, breech-loading mortars.

The gun emplacements were constructed with reinforced concrete and had huge earthen or sand parapets in front. Bombproof magazines were placed far underground.

Electrically controlled submarine mine defense projects were developed for the harbors, and fire control systems for locating targets and directing artillery fire were developed.

Improvements in design and construction techniques were made as the program moved forward and those batteries constructed toward the end of the period were more efficient than the early works. Hawaii’s coastal defenses, coming after those on the mainland, would be the beneficiary of these improvements.

As construction wound down on the mainland in 1905, concerns about the state of the nation’s defenses were still heard. A few
important harbors, such as Los Angeles, still lacked fortifications, as did the new American overseas interests, including Hawaii, the Philippines, and the Panama Canal, then under construction.

President Theodore Roosevelt appointed Secretary of War William H. Taft to head a new National Coast Defense Board to review the state of the defenses and to further their effectiveness technically. (Thompson)

In January 1905 Roosevelt instructed Secretary of War William H. Taft to convene the National Coast Defense Board (Taft Board) ‘to consider and report upon the coast defenses of the United States and the insular possessions.’ (Dorrance)

The improvements resulting from the Taft Board’s work included organization of coastal searchlights in batteries for the illumination of harbor entrances, electrification of the fortifications (lighting, communications, ammunition handling), and development of a modern system of aiming.

Since these advances coincided with the construction of Oahu’s fortifications, the new gun and mortar batteries and the mine defense may be said to be from the Taft period. (Thompson)

The Taft Board report recommended in 1906 that O’ahu’s defenses consist of fortifications that defended Honolulu Harbor and Pearl Harbor. The recommendations were refined by a joint Army and Navy board in 1908, and the harbor defense buildup on O’ahu followed the refinements until the onset of World War I.

In 1908 the U.S. Army Corps of Engineers was in the midst of constructing O‘ahu armored fortifications in accordance with the recommendations of the joint board.

These weapons were to be emplaced within new military reservations that were eventually named Forts Armstrong, Kamehameha, DeRussy and Ruger.

Fort Armstrong (Battery Tiernon) got two 3-inch cannons in 1909; Fort Kamehameha got two 12-inch cannons at Battery Salfridge in 1907 and eight 12-inch mortars at Battery Hasbrouck in 1909); Fort DeRussy got two 14-inch cannons at Battery Randolph and two six-inch cannons at Battery Dudley; and Fort Ruger got eight 12-inch mortars at Battery Harlow in 1907. (Dorrance)

The forts and battery emplacements were constructed according to the concepts of the times. The batteries were dispersed for concealment and to insure that a projectile striking one would not thereby endanger a neighbor. They were open to the rear to facilitate ammunition service at a rapid rate.

The mortars were emplaced four to a pit and were secure when exposed to the flat naval fire of the time. The guns were mounted on disappearing carriages that remained concealed behind a frontal parapet until elevated to fire. (Dorrance)

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Battery_Randolph-Fort_DeRussy-(army-mil)

From 1908 until 1917 most of the troops at Fort DeRussy lived under canvas-(CoastDefenseJournal)

Target Practice by the 10th Company, CAC, with the 14-inch guns of Battery Randolph in July 1915-(CoastDefenseJournal)

Target Practice at Battery Dudley-(CoastDefenseJournal)-1938

One of Battery Randolph’s 14-inch M1907M1 guns on its disappearing carriage-(CoastDefenseJournal)

Fort_Ruger-Battery_Harlow-(NPS)-1982

Fort_Armstrong-colorized-(Hammatt)-1911-1920

Fort Kamehameha 12-inch railroad mortars-1930s

Fort Kamehameha 8-inch railway guns, 1930s

Fort DeRussy is nearly complete – area north (right) is still generally undeveloped-Battery Dudley in lower center-CoastDefenseJourna)-1919

Encampment of the 3rd Balloon Company at Fort Ruger on back side of Diamond Head.

January 8, 2016 by Peter T Young 2 Comments

Mule Tunnel

With its panoramic view from Koko Head to Waiʻanae, the summit of Diamond Head was an ideal site for the coastal defense of O‘ahu. In 1904, Diamond Head was purchased by the Federal government and designated for military use.

In 1906, Secretary of War William H Taft convened the National Coast Defense Board (Taft Board) “to consider and report upon the coast defenses of the United States and the insular possessions (including Hawai‘i.)” They recommended a system of Coast Artillery batteries to protect Pearl Harbor and Honolulu.

Fortification of Diamond Head began in 1908 with the construction of gun emplacements and an entry tunnel through the north wall of the crater from Fort Ruger known as the Mule Tunnel.

Originally, the tunnel was 5-feet wide and 7-feet high which is what was required for mules. Mules were used primarily to pull narrow gauge rail cars loaded with material in and out of the crater and to the various construction points.

Fort Ruger Military Reservation was established at Diamond Head (Leʻahi) in 1906. The Reservation was named in honor of Major General Thomas H. Ruger, who served from 1871 to 1876 as the superintendent of the United States Military Academy at West Point.

The trail to the Diamond Head summit was built in 1908 as part of the US Army Coastal Artillery defense system. Entering the crater from Fort Ruger, through the Mule Tunnel, the trail scaled the steep interior western slopes of the crater to the summit.

The dirt trail with numerous switchbacks was designed for mule and foot traffic. The mules hauled materials on this trail for the construction of Fire Control Station Diamond Head located at the summit. Other materials were hoisted from the crater floor by a winch and cable to a midway point along the trail. (DLNR)

In about 1910, there was a narrow gauge railway running from the mule tunnel across the center of the crater

Between 1909-1921, the Hawaiian Coast Artillery Command had its headquarters at Fort Ruger and defenses included artillery regiments stationed at Fort Armstrong, Fort Barrette, Fort DeRussy, Diamond Head, Fort Kamehameha, Kuwa‘aohe Military Reservation (Fort Hase – later known as Marine Corps Base Hawaiʻi) and Fort Weaver.

The forts and battery emplacements were dispersed for concealment and to insure that a projectile striking one would not thereby endanger a neighbor.

The fort included Battery Harlow (1910-1943 – northern exterior;) Battery Hulings (1915-1925- (tunnels through crater wall;) Battery Dodge (1915-1925 – tunnels through east crater wall;) Battery Mills (1916-1925 – on Black Point;) Battery Birkhimer (1916-1943 – mostly below ground inside the crater;) Battery Granger Adams (1935-1946 – on Black Point (replaced Battery Mills;)) Battery 407 (1944 – tunnels through south crater wall;) and Battery Ruger (1937-1943).

In 1922, Mule Tunnel was enlarged to 15 feet wide by 14 feet high. A Fire Control Switchboard that had been in a shed outside the tunnel was moved into a room carved into the wall about 100 feet from the outside end. (Its name later changed to the Kapahulu Tunnel.)

The headquarters of the Harbor Defenses of Honolulu came to Fort Ruger in January 1927. In 1932 work began on a bombproof Harbor Defense Command Post (HDCP or “H” Station) built into the Kapahulu Tunnel.

During the widening of the tunnel, a larger cavern was cut into the wall of the tunnel at the downhill end, creating rooms for a Harbor Defense Command Post.

The new complex of eight rooms included the old fire control switchboard room and became the Harbor Defense Command Post. (Those rooms are now used by the Hawaii Red Cross as storage.)

In 1932 the tunnel was enlarged again, to 17 feet high to allow truck traffic. During the widening a larger cavern was cut into the wall of the tunnel at the downhill end, creating rooms for a Harbor Defense Command Post.

The Kahala Tunnel was built in the 1940s and is the public entrance today. (The Kapahulu Tunnel is used only when the Kahala Tunnel is closed for repairs or problems.)

In January 1950 Fort Ruger became the headquarters of the Hawaii National Guard. In 1955 most of the Fort Ruger reservation was turned over to Hawaii with the U.S. Army retaining the parade and Palm Circle until 1974 and the Cannon Club (officers’ club) until 1997.

The fort’s barracks area became the University of Hawaii’s Kapiʻolani Community College. (Lots of information is from DiamondHeadHike.)

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Diamond_Head-Mule-Team-StarAdv

Kapahulu_Tunnel-diamondheadhike

Originally Harbor Defense Command Post offices, now Red Cross Storage-diamondheadhike

Brian Miyamoto of Hawaii Civil Defense and Denby Fawcett walk through the Kapahulu or Mule Tunnel-StarAdv

Old Mule trail – now hike to summit

Old Mule trail-now hike to summit

Hike to summit

Near summit

Kahala Tunnel

Tunnel on hike to summit

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State Monument interpretive sign

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Fort_Ruger_1922_Main_Post_Plan-WC

Fort_Ruger_Harbor Defense Command Post (HDCP)

Diamond_Head_State_Park-Master_Plan-Layout

August 3, 2015 by Peter T Young Leave a Comment

Missile-Age Minutemen

It was not until World War II that the technology of using rockets and missiles in warfare became firmly established. During the final months of World War II, several major defense contractors studied the likelihood that evolving technologies could produce guided missiles to intercept bombers and surface-to-surface missiles.

The Cold War, a term used to describe the hostile relations between communist and non-communist countries, greatly accelerated missile and rocket technology. (Mason; HAER)

During the Cold War era that followed World War II, the threat of foreign attack on US soil shifted from naval assault to air attack, particularly by aircraft carrying nuclear weapons. Thus, the Army Air Defense Artillery took responsibility from the Coast Artillery branch for defending the US. (NPS)

The perception that the Soviet Union might be capable of constructing a sizable fleet of long-range, nuclear-armed bomber aircraft capable of reaching the continental US provided motivation to rapidly develop and deploy a missile system to defend major US population centers and other vital targets. (TheMilitaryStandard)

The potential threat posed by such aircraft became much more serious when, in 1949, the Russians exploded their first atomic bomb.

The goal of the Army in the 1950s was to establish a nationwide defense system of surface-to-air guided missiles (SAMs) placed in critical positions around major urban centers or strategic military installations within the continental US, Hawaii and Europe.

Prior to the guided missile era, the Hawaiʻi Air National Guard, armed with four batteries of 90-mm Anti-Aircraft Artillery guns, provided antiaircraft defense of Oahu. The battalion’s four firing batteries were deployed to Sand Island (two,) Fort Barrette (one) and Waianae (one,) with battalion headquarters at Fort Ruger. (Bennett)

The development of a missile-based air defense system necessitated the reorganization of the Army command structure. In 1950, all artillery units were joined to a new continental air defense system under the US Army Antiaircraft Command (later renamed the US Army Air Defense Command;) control was placed under the North American Air Defense Command (NORAD.) (Mason; HAER)

Nike, named for the mythical Greek goddess of victory, was the name given to a program which ultimately produced the world’s first successful, widely-deployed, guided surface-to-air missile system. (TheMilitaryStandard)

The missile was first test-fired in 1951, and the first Nike Ajax battalion was emplaced at Fort Meade, Maryland in 1953. As the Nike Ajax system underwent testing during the early-1950s, the Army became concerned that the missile was incapable of stopping a massed Soviet air attack.

To enhance the missile’s capabilities, the Army explored the feasibility of equipping Ajax with a nuclear warhead, but when that proved impractical, in July 1953 the service authorized development of a second generation surface-to-air missile, the Nike Hercules.

Conversion from conventional artillery to missiles in the continental US was complete by July 1958. The Nike Hercules placements in the field expanded over the next 6-years. (Federation of American Scientists)

Coastal defenses during this period largely depended on the Nike antiaircraft missile system. The Nike system was not only the most expensive missile system ever deployed, it was also the most widespread (300 sites in 30 states) and longest-lived (25 years nationwide.) (NPS)

The missile sites were designed and constructed by the Army Corps of Engineers, and standardized plans were generally used. (However, the Hawaiʻi facilities were typically above ground launching sites with berms protecting the launchers.)

Originally, the Army planned to build eight batteries at six missile sites around the island. This plan was eventually reduced in scope, and six batteries were built at four areas (two single and two double batteries.)

The four sites were at Dillingham Air Force Base in Mokuleʻia (Kawaihāpai;) Kahuku Army Training Area near Mt Kawela; Bellows Air Force Station at Waimanalo and Barbers Pt (Palehua,) on the southwestern portion of the Waianae Mountain Range.

Barber’s Point and Bellows Field each hosted two batteries and had 24 missiles, while the single batteries each had 12 missiles.

The sites were coordinated in their defense efforts through direction from the Army Air Defense Command Post located at Fort Ruger in a tunnel in Diamond Head and were manned by Army Guardsmen.

A typical Nike air defense site consisted of two separate parcels of land. One area was known as the Integrated Fire Control Area. This site contained the Nike system’s ground-based radar and computer systems designed to detect and track hostile aircraft, and to guide the missiles to their targets.

The second parcel of land was known as the Launcher Area. At the launcher area, Nike missiles were stored horizontally. While elsewhere, the missiles were stored in underground missile magazines, the Hawaiʻi facilities were typically above-ground magazines and launching sites with berms protecting the launchers.

The Nike missile sites were manned 24-hours a day by the Hawaiʻi National Guard and were armed with the nuclear-capable Nike Hercules surface-to-air-missiles. (Army)

Hawaiʻi and Alaska were the only locations where live Nike missiles were test fired. Targets included computer generated points in space and miniature airplanes. No missile was ever fired in anger.

While the rest of the Nike force conducted its annual live fire practices at the White Sands Missile Range in NM, the Hawaiʻi Guard was unique in that it conducted its annual live-fire certifications from mobile launchers firing off the north shore of the island of Oʻahu. (National Guard)

Hawaiʻi was also the only state to man all of its firing batteries with Guardsmen; in the continental US the Guard manned about a third of all Nike sites. (National Guard)

The Hawaiʻi units were the only National Guard units to operate a command post. Guardsmen had demonstrated their ability to conduct real-world missions while in a part-time, state-controlled, status, in the process proudly adopting for themselves the title “Missile-Age Minutemen.”

The facilities were continuously operated until the closure of all four Nike sites on O`ahu in March 1970, when the entire Nike Program was closed down as part of the Strategic Arms Limitation Treaty (SALT) with the Soviet Union (with the exception of batteries in Alaska and Florida that stayed active until the late 1970s; by 1975 all Nike Hercules sites had been deactivated.)

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Nike-test-fire-illustration

Nike-Hercules-Dillingham-Bennett

Nike-Hercules-Bellows-Waimanalo-Bennett

Nike-Ajax and Nike-Hercules

Nike Ajax, Nike Hercules and Nike Zeus

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Nike-Kahuku

‪ Missile Control and Guidance

90-mm anti-aircraft gun

MMS-151-Ch01-Launcher

Nike-Kahuku-launch area

Hawaii-Nike_Facilities-GoogleEarth

May 6, 2015 by Peter T Young 2 Comments

Hilo Coastal Defense

Dating back to the beginning of the 20th century, Oʻahu held a position of primary importance in the military structure of the US before and during WWII. During the prewar years Oʻahu and the Panama Canal Zone were the two great outposts of continental defense. (army-mil)

A key goal in the Pacific was to hold Oʻahu Island as a main outlying naval base and to protect shipping in the waters around the Hawaiian Islands.

In 1906 the Taft Board recommended a system of Coast Artillery batteries to protect Pearl Harbor and Honolulu. Between 1909-1921, the Hawaiian Coast Artillery Command had its headquarters at Fort Ruger and defenses included artillery regiments stationed at Fort Armstrong, Fort Barrette, Fort DeRussy, Diamond Head, Fort Kamehameha, Kuwa‘aohe Military Reservation (Fort Hase – later known as Marine Corps Base Hawaiʻi) and Fort Weaver.

The District was renamed Headquarters Coast Defenses of Oʻahu sometime between 1911 and 1913. Following World War I and until the end of World War II, additional coastal batteries were constructed throughout the Island.

Then, on December 7, 1941, the Japanese attacked Pearl Harbor.

As soon as the air attack was over, the Hawaiian Department plunged into a reconstruction and new construction effort of unprecedented scale and pace.

By December 12, the Army position was “to take all possible steps short of jeopardizing the security of the Continental United States and the Panama Canal to reinforce the defenses of Oʻahu.”

Wartime reality hit the neighbor islands a few days later. A group of about nine Japanese submarines were kept in the vicinity of Hawaiʻi until mid-January – they were stationed there to find out just how much damage had been done to the American military.

Just before dusk on December 15, a submarine lobbed about ten shells into the harbor area of Kahului on Maui, and three that hit a pineapple cannery caused limited damage.

Over a 2½-hour period during the night of December 30 – 31, submarines engaged in similar and nearly simultaneous shellings of Nawiliwili on Kauaʻi, again on Kahului, Maui and Hilo on the Big Island.

The principal immediate change in Hawaiʻi’s defense structure came about on December 17, 1941, when the top Army and Navy commanders were replaced and all Army forces in the Hawaiian area were put under command of the Commander in Chief, Pacific Fleet.

Under a cooperative agreement, the army operated coast defense guns, all anti-aircraft batteries except those on naval ships, most of the pursuit aircraft on the Island, an inshore patrol which extended 20-miles out to sea and aircraft warning service. The navy operated the fleet and distance reconnaissance extending to 600-miles out to sea.

Two arguments won the approval of the War Department during December for a much larger reinforcement of Hawaiʻi. The Navy contended that the sure defense of the Hawaiian area depended primarily on Army air power and that the security and effectiveness of that air power required its dispersion among the major islands of the Hawaiian group.

Secondly, while the immediate reinforcement of December 1941 might ensure against a direct attempt by the enemy to invade Oʻahu, the Japanese had the naval strength to cover an invasion of one or more of the almost undefended neighbor islands. From bases on these islands the enemy could attack and possibly starve out Oahu.

These arguments led to plans for garrisoning the other islands of the Hawaiian group. And, Hilo was a natural choice.

After the sugar industry developed across the Islands, Hilo grew to be the second largest town in the islands, acting as a business hub for the numerous plantations along the Hilo-Hamakua coast, as well as a transport center for incoming supplies and equipment and outgoing crops.

In 1908, construction began on the Hilo Bay breakwater along the shallow reef, beginning at the shoreline east of Kūhiō Bay; by 1929 the breakwater was completed and extended roughly halfway across the bay. Piers were built and extended by 1927.

(Contrary to urban legend, the Hilo breakwater was built to dissipate general wave energy and reduce wave action in the protected bay, providing calm water within the bay and protection for mooring and operating in the bay; it was not built as a tsunami protection barrier for Hilo.)

In 1926, a 400 by 2,000-foot field had been cleared for Hilo Airport and on February 11, 1928, the new airport was dedicated. A second and third runways were added and the airport was renovated (the renovation dedication ceremony was held May 2, 1941.)

At the outbreak of World War II, Hilo Airport was taken over by the Army Engineers, and an Air Corps fighter squadron was stationed there. US Army Engineers constructed military installations and continued the expansion of runways, taxiways and parking aprons. The name of Hilo Airport was changed to General Lyman Field on April 19, 1943.

At Hilo, a mobile field battery of 155-mm guns was set up in December 1941. Four 4-inch naval guns were later emplaced in 1942.

To help man them, the 96th Coast Artillery Regiment (AA) (Semi-mobile – activated April 15, 1941 at Camp Davis, North Carolina, and trained there until December 27) arrived in Hilo on March 10, 1942. (They stayed at Hilo until December 1943; then they transferred to Oʻahu.)

The Hilo battery was abandoned in 1945. (Lots of information here is from army-mil.)

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